Kids, Pizza, Engineering – A Fantastic SciTech Festival Open House at PADT

ScitechFestivalLogoWe thought we would open PADT’s doors to families and maybe a few people would stop by. Over 250 people did just that.  What a great evening of smiling kids and adults enjoying the excitement of engineering.  Exciting engineering? Yes, we know enough to not talk about quality system protocols, matrix inversions, and non-linear turbulence model convergence. We stuck to 3D Printing, elephants on skateboards, and 3D scanners. And we fed everyone pizza.

FullSizeRenderIt was a great evening where everyone learned something.  The focus was on exposing what engineers do, what PADT does, to people who may not be technical. Mostly kids but we also saw it as a way for engineers to show their family members and friends what engineering is about.  The results far exceeded our expectation, mostly because of how great everyone who showed up was.

Some of the quotes from people who have emailed to thank us are:

“Thank you for opening up your office to me.  What a cool place!  Even though I have been familiar with and worked with 3D printing for 20+ years, it is always nice to see the new technology, products, and the output of the products. “

“… to see my son and all of the other kids so excited and amazed was truly awesome. Mason told me it was the best night of his life! And this morning his first words to me where thanking me for taking him to the event and when can we go back.”

“This is such a great opportunity for me to show my grandkids what I spent my life doing, and seeing them get so excited about it is wonderful”  

The best part of the event for most of us here at PADT were the fantastic questions.  As one of our engineers said “for 2 hours I was just lost in the joy of positive human interaction.”  We do love what we do here, but it was nice to share it with other people.

Below are some pictures from the evening.  Make sure you sign up for PADT’s email list to get invites to future events.

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We were pleased to be named a AZ SciTech Festival Signature Event

 

At several points in the evening, the line was headed out the door.
At several points in the evening, the line was headed out the door.

 

The Demo room was full of 3D Printers and the kids loved handling the parts.
The Demo room was full of 3D Printers and the kids loved handling the parts.
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Our office robot was a huge hit.
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The seminar room was turned into a hands-on lab for everyone to touch and feel the engineering tools we use.
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Some of the youngest attendees were able to give ANSYS AIM a literal spin and model the effect of a kid, a dad, and an elephant standing on a skateboard.
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Some people just took to a given tool, even advanced simulation.
Students with exposure to engineering were able to ask our experts in-depth questions about technologies.
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The haptic device was a huge hit. It give real feedback as you edit and probe an object on the computer. Needless to say, kids adapted to it far faster than the adults.
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Engineering students were able to dive deep into the mechanics behind 3D Printing as well as its real world applications in industry.
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This is Ovid. He is PADT’s new mascot. We hope to use him more in the future to help explain what we do here.
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This station shows how 3D Printing works, by stacking layers of material. Ovid doesn’t look as good in low resolution.
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Scanning was a great way for everyone to see how we inspect and reverse engineer objects.

Bring the kids for an evening of STEM fun at PADT’s AZ SciTech Festival Open House

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PADT is excited to open our doors to the community and show you and your families what engineering is all about.  Bring the family down for a tour of PADT’s Tempe office and we will show them why engineering rocks. This family friendly event is a great way for kids to see what engineers really do all day.  Tour our 3D printing lab and check out how “We Make Innovation Work”.          Register Here

WHEN: Wednesday, February 24th from 6:00pm to 7:30pm
WHERE: PADT Headquarters
  7755 S. Research Drive, Suite 110
  Tempe, AZ 85284

The Arizona SciTech Festival is a state-wide celebration of science, technology, engineering and math held annually in February and March.  Through a series of over 1,000 expos, workshops, conversations, exhibitions and tours held in diverse neighborhoods throughout the state, the Arizona SciTech Festival excites and informs Arizonans from ages 3 to 103 about how STEM will drive our state for next 100 years. Spearheaded by the Arizona Commerce Authority, Arizona Science Center, the Arizona Technology Council Foundation, Arizona Board of Regents, the University of Arizona and Arizona State University, the Arizona SciTech Festival is a grass roots collaboration of over 700 organizations in industry, academia, arts, civic, community and K-12.

Additive Manufacturing – Back to the Future!

Paul Nigh's 'TeamTimeCar.com' Back to the Future DeLorean Time Machine
Production of Back to the Future began in 1984 – it was recently announced that the DeLorean is to go back in production with new cars rolling out in 2017

Most histories of Additive Manufacturing (3D printing) trace the origins of the technology back to Charles Hull’s 1984 patent, the same year production began on the first of the Back to the Future movies. Which is something of a shock when you see 3D printing dotting the Gartner Hype Cycle like it was invented in the post-Seinfeld era. But that is not what this post is about.

When I started working on Additive Manufacturing (AM), I was amazed at the number of times I was returning to text books and class notes I had used in graduate school a decade ago. This led me to reflect on how AM is helping bring back to the forefront disciplines that had somehow lost their cool factor – either by becoming part of the old normal, or because they contained ideas that were ahead of their time. I present three such areas of research that I state, with only some exaggeration, were waiting for AM to come along.

  • Topology Optimization: I remember many a design class where we would discuss topology optimization, look at fancy designs and end with a conversation that involved one of the more cynical students asking “All that’s fine, but how are you going to make that?”. Cue the elegant idea of building up a structure layer-by layer. AM is making it possible to manufacture parts with geometries that look like they came right out of a stress contour plot. And firms such as ANSYS, Autodesk and Altair, as well as universities and labs are all working to improve their capabilities at the intersection of topology optimization and additive manufacturing.
Topology optimization applied to the design of an automobile upper control-arm done with GENESIS Topology for ANSYS Mechanical (GTAM) from Vanderplaats Research & Development and ANSYS SpaceClaim
Topology optimization applied to the design of an automobile upper control-arm done with GENESIS Topology for ANSYS Mechanical (GTAM) from Vanderplaats Research & Development and ANSYS SpaceClaim
And we printed that!
And we printed that!
  • Lattice Structures: One of the first books I came across when I joined PADT was a copy of Cellular Solids by Lorna Gibson and M.F. Ashby. Prof. Gibson’s examples of these structures as they occur in nature demonstrate how they provide an economy of material usage for the task at hand. Traditionally, in engineering structures, cellular designs are limited to foams or consistent shapes like sandwich panels where the variation in cell geometry is limited – this is because manufacturing techniques do not normally lend themselves well to building complex, three dimensional structures like those found in nature. With AM technologies however, cell sizes and structures can be varied and densities modified depending on the design of the structure and the imposed loading conditions, making this an exciting area of research.

    Lattice specimens made with the Fused Deposition Modeling (FDM) process
    Lattice specimens made with the Fused Deposition Modeling (FDM) process
  • Metallurgy: As I read the preface to my “Metallurgy for the Non-Metallurgist” text book, I was surprised to note the author openly bemoan the decline of interest in metallurgy, and subsequently, fewer metallurgists in the field. And I guess it makes sense: materials science is today mostly concerned with much smaller scales than the classical metallurgist trained in. Well, lovers of columnar grain growth and precipitation hardening can now rejoice – metallurgy is at the very heart of AM technology today – most of the projected growth in AM is in metals. The science of powder metallurgy and the microstructure-property-process relationships of the metal AM technologies are vital building blocks to our understanding of metal 3D printing. Luckily for me, I happen to possess a book on powder metallurgy. And it too, is from 1984.
This book was printed in 1984, and is very relevant today
Published 1984

And the Best Conference Award Goes To …..

AADM Expo

At PADT, we’re as big of a fan as anyone of the cool, trendy software and IT companies that run up billion dollar valuations in Silicon Valley and keep us all entertained and productive with their latest apps and platforms.

But as an engineering product and services company, we’re hardware geeks at heart and one of our favorite conferences is coming up quick. It’s the Aerospace, Aviation, Defense and Manufacturing (AADM) Conference hosted by the Arizona Technology Council and Arizona Commerce Authority on March 3 at the Hilton Scottsdale Resort.

Arizona has a rich history in this sector. TechAmerica’s 2014 Cyberstates Report ranks Arizona fourth nationwide for jobs in the space and defense systems manufacturing industry, employing more than 8,300 people.  Industry giants such as Raytheon, Honeywell, Boeing, Lockheed Martin and General Dynamics all have a big presence here. Luke Air Force Base, Fort Huachuca and the Yuma Proving Ground all provide ideal places for testing and flying in our cloudless skies and more than 300 days of sunshine.

When you look at manufacturing, you’ll find thousands of varied companies located here that are propelling Arizona’s economy into the next era of growth. Industries leaders such as Intel, Microchip, and Frito Lay all have significant Arizona operations.

Now in its fifth year, this conference has become the gathering place for Arizona’s AADM industry. You’ll not only have a chance to hear what the big companies are up to, you’ll meet potential suppliers and customers during the interesting presentations and well-attended cocktail reception. And for as little as $750 you can get a booth space and two conference tickets – that’s a deal you won’t find in New York City! The traffic at our booth always keeps us hopping and give us the opportunity to capture great leads.

If you haven’t checked it out yet, get on it, check out the sponsorships and  register now. And don’t forget to stop by the PADT booth. We’ll show you how we make innovation work!

Christmas Left-Right Gift Exchange Story: Star Wars Adventure

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, 2015, we had started the day of the party by attending the new Star Wars movie, so the story had to be Star Wars related.

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.

You can find our older stories here

– Fairy Tail Christmas (2014)
– Science Fiction Christmas (2013)
– Romance Christmas (2012)
– Film Noir Christmas (2011)


A long time ago in a galaxy far far, away…

San To Claas is in trouble. Right next to the Right-torna system on the left side of the Galaxy, the planet Northpoliax, in a left hand orbit around the star Leftonia 37, was the galactic hub for all thing Christmas. Gifts left the system right after the planet’s winter solstice. But nothing left on this orbit. Because right above the largest continent on Northpoliax, a Death Star hovered. Threatening Christmas for everyone, no one was left out.

A new Sith lord, Darth Rightis, hated Christmas. All that cheer and spirit left him cold inside. Two much of the light side of the force. Just the thought of all those gifts left for younglings left him angry. But help was right around the corner. A squadron of Xwing fighters was following right behind the Millennium Falcon.

“Arffhhhhdghgg ” said Chewy.

“What? The moon on the left or the one on the right?” Asked Han Solo. Chewy gestured and Hans went to the left.

“Your other left” yelled Princess Leia. Han dived right behind the moon on the left and slingshoted right toward the Death Star, the Xwings right behind them.

The lead pilot said: “Red leader this is blue leader. You take the left side. We will take the left as well, right after you attack, those bastards won’t expect that.”
“Right” Responded blue leader.

Han added: “We will soften up that left side for you. Then let loose the “big present” after both your attacks on the left. The warhead should go right in and end this madness. “

As they approached the Millennium Falcon put covering fire to the right, then veered to the right, leaving the left open. The Xwings attacked, diving right into the slot and trying not to hit either side, the left or the right. The first attack on the left left the defenses damaged. The second attack on the left was right on target. That left the run of the Millennium Falcon. It released a plasma bomb that was wrapped in a big red package, with a bow right on top. As Han pulled up and to the left, and then the right, the warhead exploded right on inside of the main power coupler. Chewy, sitting in the right seat, bellowed in victory as the Death Star exploded right under them. As the debris clears a hologram image appeared right in the middle of the cabin.

It showed Admiral San To Clause, wearing his red uniform with white fur epilets on the right and left shoulders.

“Thank you all for coming right when we needed you. Right now, Christmas is saved and the dark side is left with one less Sith Lord. May the force, be right with you. And Merrrrrry Christmas to all!

Arizona Chief Science Officers Design Their Own 3D Printed Name Badges

az-scitech-cso-badges-3d-printed-0The Chief Science Officer program is a program for 6th-12th grade students to represent their school in STEM. And what better way is there for them to identify themselves then with 3D Printed name badges?  The program’s sponsors, the AZ SciTech Festival offer a training retreat for the kids who get elected as their school’s CSO and we all thought introducing design and 3D Printing would be a great activity.

As part of the 2015 Fall CSO Institute, PADT’s Jeff Nichols joined local designer and artist John Drury to spend some time with the kids explaining how to work with logos and shapes to convey an idea, and how to design for 3D Printing.  The kids worked out their own design and sent it to PADT for printing.

We converted their sketch into a 3D Model, starting in Adobe Illustrator. The sketch was traced with vector geometry and then a generic name was added. This was then copied 144 times and each name was typed in, with a few extras. This step was the only boring part.

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The design worked great because it is a simple extrusion with no need for support material.    The outline of their names were exported as DXF from Illustrator and then imported onto the 3D Model and extruded up to make a solid model of a badge. This was then copied to make a badge for each student. Then the names were imported and extruded on the patterned badges.

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The was a simple extrusion for each feature, allowing for contrast and readability but keeping things simple.
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This project was a great opportunity to use both patterns and importing 2D drawings. By laying everything out in a grid, we only had to make one badge and copy that. Then import the names and extrude those on the patterned badges.

STL files were then made and sent off to one of our Stratasys FDM 3D Printers. The FDM (Fused Deposition Modeling) process extrudes an ABS plastic filament, and you can change material during the build. So, to add a bit of contrast, we changed the filament color after the base of the design was done, making the logo and student names stand out.  The final results came out really nice.

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This is what they look like right out of the machine. We swapped out two color for each build. With some clever packing, we were able to get 12 badges on each platform.
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The final products really stand out.

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This project was a lot of fun because we were able to work with the students. They got what John and Jeff taught them and did a great job.  We know they will be placed with pride on back backs and jackets across Arizona.

To learn more about the CSO program, visit their website: http://chiefscienceofficers.org/ Check out the blog.  Some of these kids can really write well and their insight into Science, Technology, Math, and Education is insightful.

Star Wars – The Force Awakens with PADT

padt-star-wars-vii-5For an engineer, there are certain TV and Movie experiences that border on the religious – Star Wars is of course one of those.  That is why PADT’s main office in Tempe closed down today to head down the freeway to the Chandler to see Star Wars VII: The Force Awakens.

Around 370 employees, family members, friends, vendors, former employees, and customers showed up for the 10:00 am showing.  We were confident that JJ Abrams would do a great job, because he did so well with an even more important franchise to PADT, Star Trek.  We were not disappointed.  There were cheers, there was laughter, and several of us confessed in the lobby afterwards that we teared up a bit.  A true treat.

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We had a 410 seat theater and about 350 RSVP’s . So we got a bit nervous as the seats filled up. We did get more unexpected people then we cancellations, but we had plenty of room and the more the merrier. Bottom line, the first two rows were empty. So prefect.

I want to thank Josh Heaps here for putting it all together and for dealing with our constantly asking him about when and where it was and how many seats the theater had.

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My friend Ryan, one of AZ’s biggest Star War fans, and our fantastic V.P from Chase, Camille, were great sports who dressed up and posed for pictures. Not only does Camille constantly help make our banking a great experience, she jumps right in with our engineering fun.

This is also a great venue to thank our customers and vendors for coming and for bringing your families.  We don’t get to see many of you often enough, and rarely outside of a meeting or a phone call.  Seeing the smiles on everyone’s face after the movie was, as they say, worth the price of admission.

May the Force Be With You

If you want to organize similar event to your colleagues, hire team building company in Singapore!

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That Opening Logo that We have All Been Waiting a Long Time to See.

GCOI 2015 – Celebrating Arizona’s Technology Community

gcoi_iconFor those of us that are part of the Arizona Technology community, the official kickoff of holiday and end of year celebrations is the Governor’s Celebration of Innovation, or GCOI.  A who’s who of key people from startups to large aerospace firms gather at the convention center to recognize students, academicians, companies, and individuals who have had a significant impact on the State’s high tech industries.  This is always a special evening for PADT because many of the attendees, and usually a few of the award winners, are our customers.

In fact, for 2015 we are proud to congratulate the following long time PADT customers who were recognized last night:

  • Medtronic Tempe Campus for Innovator of the Year, Large Company
  • Raytheon Missile Systems for winning the Pioneering Award
  • ASU’s Michael Crow, the OneNeck IT Services People’s Choice Lifetime Achievement Award winner (ASU is a large PADT customer… so we feel Dr. Crow is our customer as well.)

You can find a full list of winners and some great pictures  from the event in Tishin Donkersley’s article at AZ Tech Beat.

This fantastic event is put on by the Arizona Technology Council and the Arizona Commerce Authority.  For those that were there: Mac & Cheese bar FTW.

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About the Awards

As in past years, PADT was honored to be able to fabricate the awards that were handed out. This year we used the overall design for the event, created by Atom, as our starting point. We used our Stratasys FDM printers to make the stair steps and “tech guy silhouette” The graphics are then printed on large stickers that are adhered to the back of an Arizona’ish shaped piece of plexiglass.

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The PADT Booth

This year we decided to not bring a 3D Printer and instead focus on parts made on a wider variety of printers. The hit for visitors were the metal parts that were made on ConceptLaser Direct Laser Melting systems.  In addition we got to talk about the great work that our product development team did for GlobalStar on the Spot devices and Orthosensor for their intelligent orthopedic sensors. We even had a few simulation people come by to talk ANSYS.

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Hopefully you had a chance to talk with Andrew Miller, Kathryn Pesta, or Mario Vargas. If you missed us and want to know more about PADT, what we do, or the Arizona Technology Community, reach out and we will be happy to chat.

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2015 PADT Pumpkin Fest and Launch

padt-pumpkin-lunch-1Every year around the end of October PADT has our holiday season kick-off event, our Pumpkin Fest and Launch.  This year we also added in a company meeting, killing three birds with one pumpkin.

The weather was fantastic, and we all enjoyed sitting outside in the sun under a clear blue sky.  Our pumpkin catapult, recently improved, was then rolled out for some pumpkin chunkin’ fun.

Thanks to the folks at Tech Shop Chandler we had a redesigned basket for the pumpkins to go in. Their industrial sewing machine was a perfect tool to make something strong enough.  Her are some picture below that I took with my phone, we will add video next week.

Manoj M won on distance, and Jeff McK took the prize for accuracy.

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The PADT Pumpkin cataPult ready to go.
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Ted shows good form while striving for accuracy
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The only change to this years design was a better basket made with industrial fabric on an industrial sewing machine from Tech Shop

Making Old Desks New at PADT

  • whiteboard-desks-icon1It has been a long time since I have written any articles. I thought to get me back into the flow of writing I would share a recent fun project that I completed at work where I was able reuse and re-purpose abandoned 20 year-old office desks. The issue started out a frustration related to note taking and I wanted something better. What is my frustration, how did it start? It was started by simple pet peeve of my own. I do not like using paper to jot down quick ideas, thoughts or a to-do on! I write numerous quick notes down during my day at work.

    Some examples of my daily office dilemma:

  • Rapid fire phone calls that can bounce my phone off the desk.
  • I just have to jot something down less than a single sentence down.
  • A conference call occurs I need to capture a couple quick thoughts down because I am such a great active listener and don’t want to interrupt.
  • Even sketching out a quick design for a new CUBE HPC cluster or workstation.

My whys may not be your whys and I feel like it is a time & resource waste! You might too especially when I the thoughts go something like this.

Should I:

  • Use a new piece of paper to write quick notes on? Nope
  • Find the special square colored sticky things? Nope
  • Dig through the paper recycling bin and get strange looks from my co-workers? Nope
  • Cut my own square colored sticky note things? Nope
  • I can’t seem to find a pen, open a brand new box of pens? Nope
  • Take your notes on the electronic device of your choosing, okay which one phone, laptop, and/or tablet or how about use that conference room computer? Then I end up having quick notes and scribbles EVERYWHERE!
  • Sigh…

I hope those points made you laugh and frames a picture that I was not in my comfort zone. I knew what I wanted. I had used the same note taking process for years. Probably every day I would use my two whiteboards to write quick notes on. Whiteboards worked for me, I loved my whiteboards and life was good. What happened and where the frustration occurred was that I had four office desk moves over a time span of a year at PADT, Inc. Guess what happened the new office areas did not have whiteboards in them!

Here is a picture of a bunch of abandoned desks here at PADT, Inc. I walk past desks like these every day. Then during the office moving a thought occurred to me that maybe I could use paste or mat whiteboard type surface to them and make a whiteboard type desk?

whiteboard-desks-01I figured that someone had already thought of the idea already and remembered about a business trip that I took to California this past year. I remember walking through the insides of startup lab office building. You could feel the venture capital money pulsing through the office walls. This office building environment was sophisticated and exciting. What did I notice? I am sure you can think of some good examples. Haha, but what I found fascinating was groups of people collaborating with dry-erase markers in hand and notes scribbled over entire sections of walls. On huge conference room tables I even saw that large sections of glass walls where used. Boom! I had my solution.

I did my research and this is what I used.

The primer & the solution:

The cost:

  • About $50 and a few hours of time
    • One package of the dry erase can do about 3-4 coats for a 30 sq ft area, or about two thick coast on two desks.

The steps:

  1. Lightly sand the top until smooth.
  2. Clean the top of the desk.
  3. Mask the ends of the table
  4. Apply coat of primer
  5. Apply the solution
    1. After the third or fourth coat is on, wait 3 days for use.

The results:

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Do It!

Manufacturing Open House Highlights – October 2015

padt-mfg-openhouse-2015-1Here at PADT we help people who make products, stuff that gets manufactured.  So we focused our open house yesterday on advanced manufacturing and invited the community to come out and network, learn, and share.  Even though it was a busy week for technology events in Arizona, we had a great turnout on a surprisingly cloudy Wednesday evening.

October is Manufacturing month and this open house was part of the Arizona Commerce Authority’s coordinated events to highlight manufacturing in Arizona.   You can learn more about other events in the state here.

This event was a bit more casual and less structured then past PADT open houses, letting attendees spend more time one-on-one with various experts and dig deep in to technologies like metal 3D Printing, urethane casting, topological optimization, and scanning.

What struck all of us here was the keen interest in and knowledge about the various tools we were showing across a wide range of attendees.  From students with home built 3D Printers to managers from local aerospace companies that are on the forefront of Additive Manufacturing, the questions that were asks and comments that were made with insightful and show a transition of this technology from hype to real world application.

Below are some more quick snapshot taken during the event.

A big thanks to everyone who made it out and we hope to see more of you next time. If you have any questions about the application of advanced manufacturing technologies to your products, don’t hesitate to reach out to us at info@padtinc.com or 480.813.4884.  As always, visit www.PADTINC.com to learn more.

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PADT’s Dr. Dhruv Bhate explains the latest developments in metal Additive Manufacturing.

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PADT’s Director of Engineering, Rob Rowan, discusses how PADT Medical has helped companies turn their medical device ideas into products.
 

 

 

 

 

Ademola Falade, PADT's scanning expert, describes how blue light scanning has changed how we capture geometry of existing parts.
Ademola Falade, PADT’s scanning expert, describes how blue light scanning has changed how we capture geometry of existing parts.

PADT's Seminar Room was packed with people talking to PADT's expert engineering staff.
PADT’s Seminar Room was packed with people talking to PADT’s expert engineering staff.
 

 

PADT’s 3D Printing Demo room was the place to hang and discuss different ways to use 3D Printing.
  
 

3D Printing the 4th Dimension – GISHWHES 2015 Scavenger Hunt

padt-sundial-insun-apple-watch-wGISHWHES is a huge international scavenger hunt. Every year teams around the globe comb through the list of 215 tasks and pick as many as possible that their team can do.  Last year they introduced 3D Printing as a task, and we helped a team 3D Print a quill pen. That was a lot of fun, so when this year’s list included an item on 3D printing, we jumped at the chance to be involved.

The item was:

110: VIDEO. Use a cutting edge 3D printer to 3D print your representation of the 4th dimension.62 POINTS

Being engineers we said “4th Dimension?  Time.”  Then it became a choice between the way mass distorts the space-time continuum or some sort of clock’ish thing.  The distortion thing seemed difficult so we focused on a clock.  Being that we were constrained on budget and time we decided to do a sundial.

The result can be seen here in this YouTube video.

It was a fun project and the team spent a bit of time in the 112F sunshine trying it out.  We can’t wait to see what we will get to do for the 2016 scavenger hunt.

Making the Model

A couple of people have asked if we downloaded the solid model for the sundial or if we made it. We actually made it. After a little bit of research we found that making a simple horizontal sundial like this one is very easy. Here are the steps we took:

Get Geometry Values

So it turns out that the angle of each hour line is determined by the latitude of where the dial will go. The angle of the pointy thing, called a gnomon, is also the latitude.  So for Tempe, AZ that is 33.4294°.That gets applied to the equation:

angle(h) = arctan(sin(L*tan(15° · h))

h = integer of the hour, 6 am to 6 pm
L = latitude

I plopped that into Excel:

=ABS(DEGREES(ATAN(SIN(RADIANS($C$3))*TAN(RADIANS(15)*B7))))

and got the following:

Latitude 33.4294
Hour Angle
6 90.00
7 64.06
8 43.66
9 28.85
10 17.64
11 8.40
12 0.00

Build the Solid Model

The next step is to build the model. I used SolidEdge because I know it real well and was able to knock it out quickly.  But all CAD tools would be the same:

  1. Pick a center point.
  2. Add lines as rays from that using the angles in the table above for each hour.
  3. Design the shape of your sundial to look cool. I did a simple circle .
  4. Mark the hours using the sketch. I raised up thin rectangles.
  5. Model the gnomon using the latitude as the angle.  Make this as fancy or simple as you want.
  6. Add whatever doo-dads you want.
  7. Label the hours if you want.
  8. Save to STL

Here is what my sketch looked like:PADT-sundial-cad-model-hour-sketc

And the final solid model looked like this:

PADT-sundial-cad-modelWe sent this to the printer as shown in the video, and got a sundial.

 

 

 

 

 

 

Come See PADT at a Conference Near You.

padt-on-the-road-iconSometimes you get that prefect storm where everything happens at once, and these last weeks of May and first weeks of June are shaping up to be our busiest time for conferences and shows this year.  We are going to be all over the place: Newfoundland, Montreal, Long Beach, Houston, and even Phoenix.

So I thought I’d shoot out this quick note just in case some of you who follow this blog are going to be at any of these events. Please make sure you stop by and say hello:

  • May 19-21, 2015:  RAPID Show – Long Beach, California
    We will have a booth and will be talking about 3D Printing as well as Simulation and Design.
  • May 31-June 6, 2015:  ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering (OMAE) – St John’s, Newfoundland, Canada
    Clinton Smith will be presenting a paper with ANSYS, Inc.  on a mesh refinement study we did for a customer on an offshore platform with ANSYS FLUENT
  • June 2-3, 2015: AmCon Phoenix – A Design & Contract Manufacturing Expo – Phoenix, AZ
    This will be our third AmCon this year, this time in our home territory.  The 3D Printing and product development team will be in a booth and I will be doing a talk on “The Practical Application of 3D Printing for Prototyping, Tooling, and Production”
  • June 9, 2015: ANSYS Convergence – Houston, TX
    Clinton Smith will be manning our booth at this event and available to talk about all that PADT does.
  • June 15-19, 2015: ASME Turbo Expo (IGTI) – Montreal Quebec, Canada
    We will just attending this conference, hanging in the Flownex booth, and can probably be found around the ANSYS booth as well.

And don’t forget our Lunch and Learn Road Show: Dealing with Scanned, Repaired, and Legacy Geometry for 3D Printing

Running in Circles Pays off at 11th Annual Pat’s Run for Team PADT

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For three months we walked, jogged, ran, and whimpered around the lake in front of our office. We trained as a team, we stretched, we mumbled, but we stuck with it. This past weekend running in circles paid off with a very successful showing at the 11th Annual Pat’s run at ASU.  I you were at the race, you may have seen our bright orange shirts in the sea of the official blue that most people were wearing.

To get to Saturday’s race, every Tuesday and Thursday we sat on big foam cylinders and yoga mats in the grass.  We butt kicked and we pranced in the parking lot. And then we starting making a clockwise orbit around the lake across the street. At first, it was walking with a little running.  Invectives were hurled.  But over time the walkers got faster, the walk/runners ran more, and the runners got faster. We found out that the sidewalk around the north lake here at the ASU Research Park is exactly a half mile, as if the designers planned it that way. We learned that if it is 82f outside you need to drink a lot of water to stay hydrated.  With the help of our fantastic Training, Susan Leveque from Physix, we worked through upset joints, asthma, and too much time spent in front of the computer.  Everyone that could make it to Pat’s Run this past Saturday did fantastic.  The most noticeable characteristic was that every single one of us had a smile on their face at the finish.

If you are not familiar with Pat’s Run, it is a charity race to honor Pat Tillman and other courageous men and women who have sacrificed everything for their country. It is a 4.2 mile loop starting and ending at the Arizona State University stadium where Pat played for ASU and then the Cardinals before he put his NFL career on hold to serve his country in the wake of the 9/11 attacks. The course loops around Tempe Town lake and ends with a run in to the stadium and on to the field.  Over 30,000 people participated this year. The weather was perfect, the event was well organized, and everyone on the 2015 PADT Running Team walked, jogged, and/or ran a great race.  Until you have done a big event like that, it is hard to understand how encouraging the large crowd is. They count your top 5 finishers, so our official team time ws 39:37 or a 9:26 min/mile pace.  We were fortunate enough to also have friends and family run with the team.

A big shout-out to Shannon, Cyril, and of our primary trainer Susan from Physix for setting up the whole thing.  We literally did not have the time or bandwidth to do this without your help, and we certainly didn’t have the knowledge.  The plan worked and you took all of us way beyond where we started.

Here are pictures from the event below.  Another thanks to Michael Dunn, Physix client on dealing with some knee issues who came out and took pictures for both teams. Great job making us look good.

We hope to see more customers and friends at next years run.  We may even follow Shawn’s lead and go for the bright green shorts next year.

Tempe Prep Robotics Team Needs your Help to Win at FIRST Robotics National Championship

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Tempe Preparatory Academy’s High School Robotics team, FRC Team #3944 All Knights, was on the winning alliance for the FIRST Robotics Competition, FRC, Arizona East Regional Competition on March 19-21st. And they are therefore on their way to St Louis, Missouri to represent Arizona at Nationals.  Last night they were on local Phoenix channel 12 to show off their robot and announce their GoFundMe campaign to raise the $25,000 in travel and entrance fees.  

PADT has pitched in already and we encourage the rest of the Arizona technology community to go to www.gofundme.com/allknights and donate what they can. Make sure you check out the video.  Great group of kids (the reporter… well I'll let you decide… typical media reaction to technology…) who have a great piece of equipment that they built in just six months.  

Support FIRST, Support Arizona STEM

Donate $25 as a Person, get your company to donate more!