The Southwest’s Leader in Numerical Simulation, Product Development, and 3D Printing Products and Services, PADT, Celebrates its 25th Anniversary
PADT’s Anniversary Celebration to be Held March 21, 2019 from 5 p.m. to 7 p.m. at its ASU Research Park Headquarters in Tempe
TEMPE, Ariz., March 7, 2019 ─ The employees and owners of PADT, a globally recognized provider of numerical simulation, product development, and 3D printing products and services, are proud to announce that today marks their twenty-fifth year in business. In 1994, a group of engineers working at a large Aerospace company decided to try the entrepreneurial life and established Phoenix Analysis & Design Technologies, Inc. (PADT). After two-and-a-half decades, the company has grown from those humble beginnings to employ over ninety-five people located across six states.
The original vision of the PADT co-founders was to take the advanced computer-aided engineering tools that were changing how turbine engines were designed, and apply them to other industries. These tools, known today as numerical simulation, comprehensive product development, and 3D Printing, became the foundation of PADT’s business, and have only increased in sophistication and use.
“A key to our long-term success has been our close relationship with ANSYS, Inc., the leader in engineering simulation software,” said Ward Rand, co-founder, PADT. “As the size of ANSYS and the capabilities of its tools have grown, we’ve increased our customer base and the type of simulation we can deliver to help our customers drive their product designs.” Today, PADT is an ANSYS Elite Channel Partner selling and supporting ANSYS products across the Southwestern U.S., and providing engineering simulation consulting worldwide.
When PADT Co-Owner Mark Johnson joined the company several years in, he grew the original vision of product design to include comprehensive services for product development, including research and testing. The PADT family sadly lost Mark in 2015 to cancer, but the Product Development team he created continues to grow and thrive. PADT honors his memory by supporting a global customer base creating products from children’s toys to medical devices and aerospace subsystems.
PADT is perhaps best known locally as the leading regional provider of 3D Printing solutions, having earned the designation of being the oldest and largest 3D Printing service based in the Southwest. “When we bought our first stereolithography machine in 1994, we couldn’t have imagined how widespread additive manufacturing would become,” said Rey Chu, PADT co-founder. “We continue to offer greater options to our customers through the sale of systems and materials, while also providing 3D Printing as a service.”
Key to PADT’s status as a leader in the rapidly growing area of 3D Printing is its partnership with the leading manufacturer of additive manufacturing systems, Stratasys and PADT’ status as a Stratasys Platinum Channel partner in the four-corner region. For over a decade, PADT has also been the primary supplier of FDM soluble support removal solutions. The manufacturing department has also successfully teamed with overseas suppliers and partners to deliver millions of dollars in goods and services to customers.
Most of all, PADT credits its success to every past and current member of the PADT family that has contributed to what the company is today, from administration, to engineering, to manufacturing.
“When people ask us how we have thrived for so long, we have to step back and point to our employees,” said Eric Miller, co-founder PADT. “Since the very beginning, their dedication to the vision of the company has been inspirational. PADT is a place where smart people like to come to work, largely because they get to take on challenging tasks for appreciative customers. It has been a true joy for all three of the company’s owners to grow with everyone. The past twenty-five years have been an amazing journey, and the next twenty-five are full of potential.”
The entire PADT family would like to thank everyone who has made the dream of helping other people innovate a reality by inviting the public to its 25th anniversary party. The event is being held on March 21st from 5 p.m. to 7 p.m., at PADT’s headquarters in ASU’s Research Park, in Tempe, Arizona. Details, including the address and required free registration, can be found at www.padtinc.com/padt25.
PADT is an engineering product and services company that focuses on helping customers who develop physical products by providing Numerical Simulation, Product Development, and 3D Printing solutions. PADT’s worldwide reputation for technical excellence and experienced staff is based on its proven record of building long-term win-win partnerships with vendors and customers. Since its establishment in 1994, companies have relied on PADT because “We Make Innovation Work.” With over 90 employees, PADT services customers from its headquarters at the Arizona State University Research Park in Tempe, Arizona, and from offices in Torrance, California, Littleton, Colorado, Albuquerque, New Mexico, Austin, Texas, and Murray, Utah, as well as through staff members located around the country. More information on PADT can be found at www.PADTINC.com.
There were Chevys and Fords, Porches and Harleys, Teslas and Acuras. Big trucks and little sports cars. And of course, there was pizza. Our first ever Motorsport Day was a blast. Mechanical engineers have a special relationship with cars. For those of us who studied machine design, statics, dynamics, thermo, and CAD, various forms of motor driven transportation often represent the pinnacle of our trade during a given era. So having a parking lot full of wheeled vehicles tickled our brains.
Employees, as well as family and friends of employees, brought their rides. The best part was to see the love and passion that the owners put into their vehicles. These are far more than just a way to get to and from work. One thing we can’t share in words is the sound of each machine. From the purr of the Porche to the throaty roar of the two drag cars to the rumble of the Harley, each one had its own unique and special sound. And the Tesla, not wanting to be left out in the sound department, cranked up its stereo did a dance for us.
This was our first attempt at this type of an event, a practice run to see if anyone was interested. Duh. It was a huge success. So, watch your email and this blog for an announcement of our 2020 Motorsport Day when we will open it up to customers and vendors who are interested in sharing their ride or taking a look.
Words don’t do these marvelous machines justice, so here is a gallery with this year’s entries. And for the car fans, a table after that gives specifics on each vehicle.
I was on the gondola up at Keystone for night-skiing a week ago, after a long day at Beaver Creek, because the last thing I am going to do at 3:00 pm is try to make it back to Denver, as everyone knows it’s hardly more than a parking lot at that point. As it gets later, there’s nothing like a solo gondola ride, however, a solo ride would stop this story right about now.
On the gondola, I overheard a conversation where one gentleman was discussing how he was unable to open the hatch of his vehicle when his skis are in his roof rack. That’s fair, I know older WRX wagons with the spoiler would not be able to open with skis on the roof no matter what, so I figured that was the case. It turns out, that was NOT the case. The reason his hatch would not open was that he orients the skis with the tails forward because it is ‘more aerodynamic’ that way… I was skeptical, but held my tongue, knowing that I had the tools at my disposal to investigate!
I decided to make a model that would allow me to simulate various conditions to get to the bottom of this. My initial hypothesis is that the addition of the ski rack and crossbars is what has the largest effect on aerodynamics, and orientation of the skis probably has a negligible effect after that. As a side note, I am solely concerned with aerodynamics in this case, and am not worrying about the amount of the ski’s base material that is exposed for a given orientation. I am of the mindset that tree trunks and hidden rocks on the mountain are more of a danger to your bases than small rocks on the highway anyway. If you are waiting to comment, “Just get a roof box!”, I understand as I own both a box and a rack at this point, and they both have their advantages, and I will not be exploring the aerodynamics of a box…
I was able to start by finding some faceted geometry of a Subaru Forester online (I’m from Colorado, can you tell?) and was able to import that into ANSYS Spaceclaim. Once in Spaceclaim, I was able to edit the faceted geometry to get nice exterior panel surfaces, which I then combined to get a single clean faceted exterior for the car.
After that, I used Spaceclaim to generate the remainder of the rack and skis, including crossbars, a ski rack, and a pair of skis (Complete with the most detailed bindings you have ever seen!). I made a combined part of the crossbars, rack, and skis for each one of my orientations, as this allows me to report the forces on each combined part during the simulation.
For the simulation, I used ANSYS Discovery Live, the newest tool from ANSYS that allows for instant and interactive design exploration. This tool lets me actively add my CAD geometry and shows results in realtime. I was able to start with just the car and then add and swap my ski/rack geometry with simple button clicks. With traditional simulation tools, I would have needed to create a mesh for each one of these cases, analyze them one at a time, and the post-process and compare results after the fact. After launching Discover Live, it’s as easy as selecting the type on analysis I want to run.
Once I have selected ‘Wind Tunnel’ for my solution, I can select my geometry, and then am prompted for the direction of flow, as well as selecting the ‘floor’ of my domain. Once that is done, results show up on the screen instantly. I only needed to modify the flow velocity to ~65 mph. I am most interested in the force on the faces of the combined crossbars, rack, and skis in each orientation, so I created Calculations for each one, which is done by simply selecting the part and using the popup toolbar to create the graph.
I was already off and running. I ran each one of the cases until the force plot had become steady.
Seeing that the force results for the Tips Forward vs. Tails Forward cases were very similar, I decided I should also run a ‘Bases Up’ Orientation, even though I STRONGLY advise against this, as UV wrecks the base material of your skis/snowboard.
In addition to the contour plot shown in the images above, you can also use emitters to show streamlines and particle flow, which also give some pretty neat visualizations.
The graph plots show values for the Total Y Force for Tips Foward, Tails Forward, and Bases Up orientations to be 37.7 N, 39.1 N, and 37.1 N, respectively. Using Discovery Live, I was able to quickly run all 3 of these simulations, showing that there is not a major difference in the forces on the ski rack between the three orientations. So, put the skis on the roof in the direction that makes life easiest for you, and keep those bad boys paired to protect your bases from the sun, because splitting them isn’t going to help with aerodynamics anyway!
Next steps would be taking a specific case and running in 2D, then 3D, in ANSYS Fluent.
For our Christmas parties at PADT we generally have over 40 employees so a traditional secret Santa gift exchange takes to long. At some point, we downloaded a right-left gift exchange story from the internet and it was a big hit. When we ran out of stories on the internet, we started writing our own, usually in some sort of over-the-top style. This years Christmas party involved sorting employees into Elf Families for some www.666casino.com/fi/games/slots games we played. That made it kind of obvious that we should make the story Elf Family related as well.
Here is how it works:
Everyone gets their gift and forms a big circle in the middle of the room. Someone with a strong voice reads the story and every time the word LEFT is read, everyone passes the package they have to the left. Every time the world RIGHT is read, everyone passes the package they have to their right. You should pause a bit at each LEFT/RIGHT to give people a chance to pass.
Way up on near the North Pole, just to the left of Santa’s workshop and right down the road from the Reindeer farms there sits a little village called Elftown. On the outside, it looked like the front of a Christmas card. Picturesque houses on the right and left side of the main street, and a giant Christmas tree right in the middle of town. But right under the surface things were not right. There was a tension in the town that left on its own, might not just tear apart the community, if left on its own it might destroy Christmas itself.
The problem was that there was a war of sorts going on between the elf Clans. Specifically, the Toe clan and the Sweet clan were furious with each other. No one really knew who was right and who was wrong, but everyone was stuck right in the middle of the conflict, and many felt they were left with no option other than violence.
It started at the last reindeer games when the Rightly Clan had decided to take the seats that belonged to the Leftover Clan. Now the members of the Leftover Clan were used to being left out of things. They lived right next to the Santa Express train tracks, but on the wrong side. So they were used to not being treated right. The only thing they had going for them was that their Reindeer Game seats were right on the track on the right side of the finish line. The Rightly Clan were on the left side, but they wanted the right side. So they marched right up and sat down, right there in the middle of the opening ceremonies. It would not be a big deal, the Rightly and Leftover clan fought all the time. The problem was that the Toe Clan had signed a contract right before the games with the Leftover Clan to outsource their toy assembly quota to them. That left the Sweet Clan out in the cold in terms of making their quota, right there two weeks before Christmas without either working-class clan to do the work for them. Right now, they were panicked. And the Toe Clan was mad that the Sweet clan had left negotiations and complained to Santa.
So right there with Mr. and Mrs. Clause sitting on their thrones right in front of the crowd, the Toe and and Sweet Clans felt it was right to make the seating controversy about so much more. Harsh words, for elves, were exchanged back and forth. Then a snowball was thrown right at a crowd and it hit Santa right in the face. He stood right up and said “I’m am left with no option but to cancel these Reindeer Games right now! All of you need to leave now, right now! I said Right now I Say… ho ho hooooo!”
Everyone left the stadium, but they left with a burning hate for each other. And right before Christmas, it reached a fevered pitch. Each clan was going through their store of toys and weaponizing what they could. Spikes were put right into baseball bats. Toy nerf guns were modified to file nails right out of their barrels. The social-economic stratification of Elftown, based on Santa’s distribution of responsibility to families that was based on payments of “left over” egg nog made right out in the open was the real cause. It was obvious regardless of if you were on the left or right of the political spectrum. As the moon passed right over the North Pole, because it was winter and the sun had left for the season, the families gathered in the main square. The Toes and the Rightly’s on the right, and the Sweets and… their allies, … other side
They brandished their vicious modified toys and hurled insults back and fortth. On that Christmas Eve, right in the heart of the north pole, right where the spirit of Christmas was born and nurtured, Elftown was about to explode. And right before that fuse was lit, a small voice could be heard. “Riliburt? Riliburt ? Is that you holding a tennis racket with a spike right in the middle?” And then an even tinier, sweeter voice answered “Annibell? Why yes, I have to support my family, my clan I’m left with no choice” “Riliburt, I need to tell you something right now, right here in front of everyone, it can’t be left unsaid.Riliburt, I love you! That is right. I. Love. You!. “Oh, Annibell, I love you as well! But you are from the Toe Clan and I am a lowly Leftover, our love is not right.”
At that point, every elf heart, in the left of every elf chest, skipped a beat. All of the anger stopped, just for a second, as they all contemplated love. Because stripped of the presents, and trees, and eggnog, Christmas was really about love. On the right side of the square, and on… the other side, everyone knew what the right thing was to do. They dropped their weapons right there and merged into a giant pointy eared mass of hugging elves. And right in the middle was the couple that reminded everyone that what they were all about to do was not right. That the Toes, the Sweets, the Rightly’s, and the Leftovers could all get along if they just remember that the right thing to feel was love and that they left hate and anger outside of Elftown.
Peace on earth, goodwill towards men was the message they remembered, right there, at the top of the world, in a place called Elftown, just to the left of Santa’s workshop and right down the road from the Reindeer farms.
The only day available for our company meeting was October 31st, so we combined the meeting with a Halloween celebration. We are an engineering company, so not everyone wore a costume.. but we did all have fun. Check out the slide show:
I have a lot of toys in my office and on my desk. Some might consider it unprofessional or even childish. I don’t disagree. What they are missing is the power of toys and the power of play. I explore this idea in “Why I keep toys on my desk.” Also for those of you who are readers of the PADT blog, I’ve included below some images of my favorite ones.
It is no mystery that I love my Subaru. I bought it with the intention of using it and I have continually made modifications with a focus on functionality.
When I bought my roof crossbars in order to mount ski and/or bike racks, I quickly realized I needed to get a fairing in order to reduce drag and wind noise. The fairing functions as designed, and looks great as well. However, when I went to install my bike rack, I noticed that the fairing mount was in the way of mounting at the tower. As a result, I had to mount the rack inboard of the tower by a few inches. This mounting position had a few negative results:
The bike was slightly harder to load/unload
The additional distance from the tower resulted in additional crossbar flex and bike movement
Additional interference between bikes when two racks are installed
These issues could all be solved if the fairing mount was simply inboard a few more inches. If only I had access to the resources to make such a concept a reality…. oh wait, PADT has all the capabilities needed to take this from concept to reality, what a happy coincidence!
First, we used our in-house ZEISS Comet L3D scanner to get a digital version of the standard left fairing mount bracket. The original bracket is coated with Talcum powder to aid in the scanning process.
The output from the scanning software is a faceted model in *.STL format. I imported this faceted CAD into ANSYS SpaceClaim in order to use it as a template to create editable CAD geometry to use as a basis to create my revised design. The standard mounting bracket is an injection molded part and is hollow with the exception of a couple of ribs. I made sure to capture all this geometry to carry forward into my redesigned parts, which would make the move to scaled manufacturing of this design easy.
Continuing in ANSYS SpaceClaim, as it is a direct modeling software instead of traditional feature-based modeling, I was able to split the bracket’s two function ends, the crossbar end and fairing end, and offset them by 4.5 inches, in order to allow the bike rack to mount right at the crossbar tower. I used the geometry from the center section CAD to create my offset structure. A mirrored version allows both the driver and passenger side fairing mount to be moved inboard to enable mounting of two bike racks in optimal positions. The next step is to turn my CAD geometry back into faceted *.STL format for printing, which can be done directly within ANSYS SpaceClaim.
After the design has been completed, I spoke with our 3D printing group to discuss what technology and material would be good for these brackets, as the parts will be installed on the car during the Colorado summer and winter. For this application, we decided on our in-house Selective Laser Sintering (SLS) SINTERSTATION 2500 PLUS and glass filled nylon material. As this process uses a powder bed when building the parts, no support is needed for overhanging geometry, so the part can be built fully featured. Find out more about the 3D printing technologies available at PADT here.
Finally, it was time to see the results. The new fairing mount offset brackets installed just like the factory pieces, but allowed the installation of the bike rack right at the tower, reducing the movement that was present when mounted inboard, as well as making it easier to load and unload bikes!!
I am very happy with the end result. The new parts assembled perfectly, just as the factory pieces did, and I have increased the functionality of my vehicle yet again. Stay tuned for some additional work featuring these brackets, and I’m sure the next thing I find that can be engineered better! You can find the files on GrabCAD here.
I had a really great time designing the Metal 3D printed shift knob from my previous blog post. I was curious what the other benefits of the knob may be besides being cool to look at and show off. What better way than to use the simulation software that we use here at PADT every day!
One of the clear differences between my solid spherical knob and the Metal 3D printed version is surface area. Being that PADT is based in Tempe, AZ, some may say that we have “warm” summers down here. Couple the 120F days with a black car, and the interior can get very hot, at some points feeling like the sun itself has taken up residence inside the back seat. With modern A/C, this heat can be mitigated fairly quickly, only to attempt to shift into gear to be scalded by the shift knob!
I wanted to see what the rate of cooling for the two knobs would be in a basic situation with some basic assumptions. Using ANSYS transient thermal, I initialized the knobs to 150F, temperatures that can be quickly reached in parked cars here in AZ. I added a convection heat transfer boundary condition on the outer surface of each shift knob, assuming a film coefficient of 50 W/m^2C, and that the ambient temp in the car is at a cool 70F.
I ran the simulations for 5 minutes, and the results were in line with what I expected. As the 3D printed knob has more surface area for cooling, it’s final temperature was ~84F, compared to the solid spherical knob at a final temperature of 115F!
We have great customers. The kind of cusomers that call up and ask “Hey, what do you think about having a Tesla test drive event for PADt employees” Duh. Yes. Please provide contact information.
Then we thought this was an event better shared with other techno-speed-nerds. The Tempe Tesla show room people liked the idea so we put together an event for our ANSYS and Stratasys customers. (Just another reason to buy from us)
The basic idea was simple, stop on by the PADT parking lot in Tempe and drive a Tesla Model S or Model X, or both. The Tesla people brought along their technical person and the test drive people were also very knowledgable about all the features in the three vehicles they let us drive. The course left the PADT parking lot, drove up to Elliot, then entred to 101, and then get off at Warner or Rey and head back, while the brave Tesla employee tried to keep cool. Especially when Oren was driving.
For many of us, this was the first time we had driven one. Let me just say that the common factor across employees and cusotmers is that everyone had an ear-to-ear grin on their face when they got back from their test drive. These cars are not just fast (large numbers of electrons pushed through big motors equals lots of torque right away) but they are brilliantly engineered. From the user interface, to the seats to, to the suspension. Everything is done right. As a group of engineers that was almost as exciting as the raw power and impecable styling of the cars.
It was a true nerdfest. We spent 10 minutes discussing regenerative breaking schemes and the idea of using regeneration all the time when you lift off the accerator instead of putting your foot on the break to slow down slightly. This is the type of paradigm shift that disrupts around one hundred years of automotive legacy. Why does the accelrator pedal have to be an accelerator pedal. Why can’t it be an input for acceleration and deceleration based on position? We also spent even more time (I’m embarassed to say how long) talking about charging. And then the topic turned to autonomous driving and the sensors used. Good times. Good times.
PADT’s relationships with Tesla actually goes way back. When they were first starting out and were just a handfull of engineers, we provided some ANSYS training and did a consulting job for them on thermal management for an early battery system. So we proudly count them as a happy PADT customer. And of course PADT worked on the large Blink chargers and has supported many companies that are suppliers to tesla.
Look for similar events in the future. No sales or seminars, just smart-people-fun type of events.
Let’s be honest, the mouse and keyboard are outdated interface methods that serve us well, but voice recognition is pretty dang awesome and efficient. In “Voice recognition, the new thing in computing” I write an entire post using voice recognition about the pros and cons of voice recognition. That is almost meta. Please enjoy, it was a fun one to do.
For our Christmas parties at PADT we generally have over 40 employees so a traditional secret Santa gift exchange takes to long. So a couple of years ago we downloaded a right-left gift exchange story from the internet and it was a big hit. We ran out of stories on the internet, so we started writing our own, usually in some sort of over-the-top style. This year, 2016, many of us had become addicted to West World, so a good old fashioned Western seemed appropriate.
Everyone gets their gift and forms a big circle in the middle of the room. Someone with a strong voice reads the story and every time the world LEFT is read, everyone passes the package they have to the left. Every time the world RIGHT is read, everyone passes the package they have to their right. You should pause a bit at each LEFT/RIGHT to give people a chance to pass.
A train whistle echoed in the distance as US Marshal Dilan McRightland brought his horse Righty to a stop on the left side of the ridge. Down below, right in the middle of the valley was his destination, the place he had been headed right towards for three weeks. Wrightville Gulch. He’d seen a lot of dusty towns, not much more than a few buildings on the right and left side of a crooked street. Left to his own devices he would have left his job and gone right back to his family farm on left bank of Ohio river, right below Louisville Kentucky. But he had sworn an oath to uphold justice, to make sure that wrongs were righted, and that no criminal was left free to cause more harm. It was the right thing to do.
He dug his heals into Righty and they headed right down the trial, towards an encounter that would have been best left alone.
As he entered the town from the… south, he surveyed both sides of the street. On the right was a bank, livery stable, and what looked like a hotel that may not be where the ‘right type of people’ stay. The other side of the street held a saloon, blacksmith, general store, and a Chinese restaurant: Right and Wrong Noodles. Dilan assumed that the fugitive he was seeking was in the saloon. So he tied up Righty, using a left hitch not, and went right in the swinging doors.
It took a while for his eyesight to adjust to the dim interior. A long mahogany bar filled the wall. On the… other side, there was a stair case that led to rooms on the second floor. Right in the middle of the room stood a giant Christmas tree. That was right, Dilan thought, today was Christmas Eve. It has been a long time since he had enjoyed a right proper Christmas. He began to day dream about snowy Christmas mornings when a shout brought him right back to reality.
“Hey! You looking for me, stranger?” A man dressed in head to toe in black leather stood on the left side of the Christmas tree. “If you are Lefty Peterson, then yes.” Replied Dilan. “I’m US Marshal Dilan McRightland and I’ve traveled all the way to Wrightville Gulch, right here in the middle of no-where, to bring you to justice.”
The two men stared at each other across the room, their right hands hovering over their six shooters, which for now were left in their holsters. “I don’t think you have it right, Marshal. When I left the Stanton brothers for dead, right in the middle of Dodge City, I left that life behind me. I’m clean now, I’ve got a wife and kids. I started over. You know what I did was right, they deserved to die. So the right thing for you to do is get back on your horse and get right out of town.”
This left Marshall Dilan a bit baffled. What if Lefty was right? And then he stood up straight and looked Lefty in the eye. “The law is the law lefty, doesn’t matter if you think what you did was right, it is up to a jury to decide that.” Lefty looked right back, and snarled “The only way you are taking me back is as a corpse. If you don’t leave in a coffin yourself. Their right hands slowly moved to their guns.
Just when they were about to draw a girl dressed like a dancer the left bank of the Sein in Paris, dashed right between them. “Stop right now!” she shouted. “Gosh Nabit! It’s Christmas Eve. Have you any heart left, either of you?” She turned to Lefty “Lefty, darling, you don’t have to die. If you think what you did was… justified, go with the marshal, argue your case.” She spun to face Marshall McRightland “And you, you come riding in here on Christmas ever, where we was having ourselves a right nice party, and you threaten our friend Lefty, that just aint right either!”
Dilan stood. He could see the star on his chest reflected in the mirror behind the bar, and he could see the star right on top of the tree. And he looked right at the dancing girl, a small tear falling from her right eye. “Lefty” he said “you agree to let me handcuff you to that bar there, and we can have ourselves a right proper Christmas ever and morning. And then we ride out of here and you get your day in court. Does that sound…. All right?” Lefty thought for a minute, then responded “I right reckon that is the right thing to do. Right here and right now on Christmas eve, maybe some peace on earth is what we need.”
And so on that Christmas Eve in a dusty town right in the middle of no-where, a little Christmas spirit, and a fiery dancing girl named… Trixie, brought a little peace on earth and goodwill towards men to a place called Wrightville Gulch.
I have always had an issue with leaving well enough alone since the day I bought my Subaru. I have altered everything from the crank pulley to the exhaust, the wheels and tires to the steering wheel. I’ve even 3D printed parts for my roof rack to increase its functionality. One of the things that I have altered multiple times has been the shift knob. It’s something that I use every time and all the time when I am driving my car, as it is equipped with a good ol’ manual transmission, a feature that is unfortunately lost on most cars in this day and age.
I have had plastic shift knobs, a solid steel spherical shift knob, a black shift knob, a white shift knob, and of course some weird factory equipment shift knob that came with the car. What I have yet to have is a 3D printed shift knob. For this project, not any old plastic will do, so with the help of Concept Laser, I’m going straight for some glorious Remanium Star CL!
One of the great things about metal 3D printing is that during the design process, I was not bound by the traditional need for a staple of design engineering, Design For Manufacturing (DFM). The metal 3D printer uses a powder bed which is drawn over the build plate and then locally melted using high-energy fiber lasers. The build plate is then lowered, another layer of powder is drawn across the plate, and melted again. This process continues until the part is complete.
The design for the knob was based off my previously owned shift knobs, mainly the 50.8 mm diameter solid steel spherical knob. I then needed to decide how best to include features that would render traditional manufacturing techniques, especially for a one-off part, cost prohibitive, if not impossible. I used ANSYS Spaceclaim Direct Modeler as my design software, as I have become very familiar with it using it daily for simulation geometry preparation and cleanup, but I digress, my initial concept can be seen below:
I was quickly informed that, while this design was possible, the amount of small features and overhangs would require support structure that would make post-processing the part very tedious. Armed with some additional pointers on creating self supporting parts that are better suited for metal 3D printing, I came up with a new concept.
This design is much less complex, while still containing features that would be difficult to machine. However, with a material density of 0.0086 g/mm^3, I would be falling just short of total weight of 1 lb, my magic number. But what about really running away from DFM like it was the plague?
There we go!!! Much better, this design iteration is spec’d to come out at 1.04 lbs, and with that, it was time to let the sparks fly!
Here it is emerging as the metal powder that has not been melted during the process is brushed away.
The competed knob then underwent a bit of post processing and the final result is amazing! I haven’t been able to stop sharing images of it with friends and running it around the office to show my co-workers. However, one thing remains to make the knob functional… it must be tapped.
In order to do this, we need a good way to hold the knob in a vise. Lucky for us here at PADT, we have the ability to quickly design and print these parts. I came up with a design that we made using our PolyJet machine so we could have multiple material durometers in a single part. The part you need below utilizes softer material around the knob to cradle it and distribute the load of the vise onto the spherical lattice surface of the knob.
We quickly found out that the Remanium material was not able to be simply tapped. We attempted to bore the hole out in order to be able to press in an insert, and also found out the High Speed Steel (HSS) was not capable of machining the hole. Carbide however does the trick, and we bored the hole out in order to press in a brass insert, which was then tapped.
Finally, the shift knob is completed and installed!
The verdict is in, if the company barq! actually existed they would have raised a lot of seed money yesterday. Members of the Phoenix area startup community gathered at PADT to try out a new idea: what if the experts who mentor and coach startups tried their hands at pitching a company? The result was fun, funny, and educational.
Local incubators/accelerators CEI, Seed Spot, and Tallwave joined PADT in pitching a totally made up company, barqk! to a group of judges who are startup experts. We talked about poop, doggy depression, bessel functions, big data, valuations, and the cat revolt. In the end we ended up with four fantastic examples of how to pitch a company and how to answer questions from investors. One of the best parts was that every single team finished their pitch in the 10 minutes they were given, and they covered everything that needed to be covered. Yes, it can be done!
And the winner is… The Center for Entrepreneurial Innovation (CEI). Tom Schumann and Patti DuBois told a story, explained the product, and got across the value to the investors of the product
You can watch the recording of the presentations in the video below. Take some time to watch the pitches and get a feel for barqk!, and how different organizations approach telling the story and more importantly, attracting investors. The audience noticed that each team had a unique take that represented their strengths.
Our judges were Jim Goulka from Arizona Technology Investors, Christie Kerner from ASU, Carine Dieude of Altima Business Solutions, and Linda Capcara with TechTHiNQ, and they did a fantastic job, especially with keeping a straight face when the contestants responded with some very inventive responses. Their contribution was important.
If you are interested in doing a similar event, here is some background information:
Each team gets a copy of the angel group funding application and a logo.
Each team gets 10 minutes to pitch
The judges have up to 5 minutes to ask questions
The other presenters can listen in
PowerPoint slides are allowed
Some variation from the company application is allowed for humor or to fill gaps, but everyone should stick to the same basic material
The other day, I saw a post on Engadget about a special case for Pokemon Go users to solve the problem of missing your prized Jigglypuff that you have happened across in the wild (or let’s face it, probably a CP 10 Rattata who is going to break out multiple times before disappearing in a puff of smoke…). The case is designed to give the user access to on screen controls and a nice channel to keep your Pokeball flinging finger straight and true.
As pointed out in the article on Engadget, this case is only useful in the capture screen. This caveat aside, the other issue with the case is that it obscures the screen. Here at PADT, we are fortunate to sell a wide variety of 3D Printing machines, some of which are capable of multiple colors and material durometers. I decided to design my own take on the case from Jon Clever to be prototyped on our Stratasys Connex 3.
The case was made with black and clear material. The black material can be combined to produce a custom stiffness, so we made that part soft and rubber like and kept the clear portion rigid. The clear has good optical quality, which could be increased with a layer of “clearcoat.”
If you have a Stratasys Connex 3 or J750 and an iPhone 6, you can make your own with these STL files, one for the rubber part and one for the clear part.
Other variations and additional possibilities would be made possible with the new Stratasys J750, the first true full color printer that can also mix clear and solid as well as hard and soft materials. The J750 was just released and highlighted on our recent road show. Visit our blog article on the Scottsdale show to learn more about this incredible printer.
Additional information about PADT and our wide range of 3D Printing offerings here.
Every once in the while you need to get out of the office and run your co-workers off a track. For whatever reason, when members of our Sales and Support department put on some helmets and strapped themselves in to electric racing karts, they got very competitive.
The people who sell and support 3D Printers and Simulation software left their Stratasys and ANSYS brochures at home and headed to the Octane Raceway in Scottsdale, AZ for some fun and decompression. They have been working hard all year making customers happy, and they needed a way unwind. So the drove in circles.
In this team building fun was had by all. Only a few curse words were exchanged. Mario was asked to get a more subtle shirt.
The only disappointment is that the winner of the event was Oren Raz… most of us back at the office were pulling for Clinton Smith to take the trophy.