3D Printing for Robotics Clubs
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A simple primer for robotics clubs wanting to incorporate 3D printing. Includes an explanation of the different kinds of printing, recommended printers, advice on materials and print orientation. Originally presented to Benson Botfest but useful for any FTC or FRC teams. (c) 2018 Shashi Jain
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3D Printing for Robotics Clubs
- 1. 3D Printing Tips for Robotics (FTC / FRC, Clubs) Shashi Jain | @skjain2
- 2. Hi, I’m Shashi • Intel Innovation Manager • Organizer - Portland 3D Printing Lab
- 3. Operators / Students Coaches Today • Printer Types • Printer Recommendations • New Materials • Part Orientation • Model Optimization
- 4. How can 3D Printing be used in Robotics? What I’ve Printed • Weight Reduction • Fairings • Cable Management • Couplers • Mechanical Grip Other Applications • Parts Count Reduction • Chassis members • Gearing • Tracks/Treads • Light Pipes • Crumple Zones • Bushings • Battery packs/assemblies
- 6. Printer Recommendations For Optimal Prints
- 7. $220 Monoprice Select Mini ABS, PLA, Composites Cura, Repetier 4x4x4” 1.75mm Source: Amazon.com Advantage: Cheap, Reliable
- 8. $400 Creality CR-10 ABS, PLA, Composites Cura, Repetier, Simplify 3D 12x12x16” 1.75mm Source: Gearbest.com Advantage: Huge build volume, Cheap
- 9. $500 Wanhao D7 Tough, Clear Resin Proprietary 4.7x2.6x8” Source: Amazon.com Advantage: High Precision, Light pipes Cons: Brittle parts, small build volume
- 10. $600/900 Prusa Research i3 MK2s ABS, PLA, Composites Slic3r Prusa, Simplify3D 9.8x8.3x8” 1.75mm Source: shop.prusa3d.com Advantages: Very precise, multicolor extension Good for Portability / On-the-Go printing
- 11. $2500 Lulzbot Taz 6 ABS, PLA, Composites Cura Simplify3D 11x11x10” 3mm Source: mattercompilers.com ($100 off + 2 Spools of PLA) Advantage: Open HW, Multiple Toolheads, Two sizes
- 12. $3500 Ultimaker 3 ABS, PLA, Composites Cura Simplify3D 8.5x8.5x11” 3mm Source: ultimaker.com Advantage: Open HW, Dual Extrusion, Engineering grade materials, Very precise, Enclosed design, Three sizes
- 13. Materials That you should be using, but might not know about.
- 14. The Big Three ABS Lego Blocks Good Temperature Resistance PLA Compostable Cutlery Easy to Print PET Coke Bottles Best of Both Worlds
- 16. Flexible Materials Uses Types • Isolators / Dampening / Gaskets • Wheels / Treads • Drive Belts • SemiFlex – Usable in Bowden, Normal Printers • NinjaFlex (TPE) – Softer (60 Shore A), Requires supported tool path • TPU – Harder (85 Shore A), Requires supported tool path
- 17. New Materials HTPLA - Heat Annealed Matte Texture High temp, Strength Uses: Chassis, Impact Grippy, Strong Layers Uses: Grabbing Tools, Friction Wheel
- 18. Exotic Materials Carbon Fiber Metal / Wood / Ceramic Micro-fibers, not strand/cloth Very stiff, Great finish Uses: Chassis, Cable mgmt, Hubs Looks awesome, Weaker than PLA Uses: Aesthetic
- 19. Very Large Nozzle • 0.3-1.2mm layers • 1.2mm nozzle • Faster Prints • Stronger, Robust Output • Uses: Catchers, Shields, Fairings
- 20. Heat Set Threaded Inserts https://www.matterhackers.com/articles/fasteners-for-3d-printing
- 21. Rules of Thumb For Optimal Prints
- 22. YHT Rule 45 degree angles don’t need supports You might be able to bridge short distances You need supports for large overhangs
- 23. Print at Angle to Reduce Supports
- 24. Circular and Hexagonal vs. Rectangular holes Weak, Hard to Print Strong, Print w/o Support
- 25. Split & Orient Part for Zero-Support Prints
- 26. Print Orientation Rubric Tension = Parallel Strong Bending = Perpendicular Strong
- 27. Cloud Topology Optimizer (cloudtopopt.com)
- 28. Cloud Topology Optimizer (cloudtopopt.com)
- 29. Join Our Meetup 1200 Members Monthly Meetups Group Projects MakerFaire Learn from the Experts http://pdx3dplab.co #crowdcow 2016 #rodinremix 2017 #nwnoggin 2018
Hinweis der Redaktion
- My name is Shashi Jain. I’m a huge 3D Printing fan and Organizer of the Portland 3D Printing Lab Meetup. I’m also an Innovation Manager at Intel Corporation, where I use frontier technologies like IoT, Machine Learning, VR to create new technologies and businesses.
- This presentation covers tips and tricks for robotics clubs wanting to use 3D Printing in their designs. It’s suitable for beginners and intermediate users alike.
- 3D Printing is useful in a number of areas on a robot. I’ve printed lots of covers (fairings) and brackets to attach components or organize cables. I’ve printed parts with material removed for weight reduction or grip as well. Other applications are on the right. Definitely consider flexible parts as it’s easy to print in TPU (urethane) or TPE (Elastomer) these days. You also have engineering plastics available for gearing and structural parts. You should combine parts into single assemblies to reduce complexity/parts count. Lastly, you can get materials usable for making bearings.
- This chart covers all the different types of printers and materials, leading to manufacturers. Current as of 2017, but maintained by 3D Hubs.
- These printers balance build volume, material support, and price.
- Monoprice Select Mini is great to experiment with 3d printing without much cash. Very reliable and simple to use, without being confining.
- Creality or Gearbest CR-10. By volume, the cheapest printer on this list. Also reliable, once you have some experience.
- Cheapest resin printer you can buy. Note that resin prints are good for precision but are not great for structure. Very expensive raw materials.
- The gold standard of 3D Printers made by one of the Godfathers of printing.
- Dead reliable and will keep you focused on your robot vs. messing with the printer. Extremely well supported.
- Dead reliable and will keep you focused on your robot vs. messing with the printer. Extremely well supported, particularly in the software.
- Three of the most common materials and their tradeoffs.
- Compare materials by strength, flexibility, and durability. Those links are kept up to date.
- How does one use flexible mterials?
- New materials that can be handy for gripping surfaces and where strength is needed.
- Use of very large nozzles reduces print time and results in very strong prints. Use this for coverings.
- Embed thermoset nuts to create solid fasteners to 3d printed parts.
- This rule will help you plan / orient parts to minimize supports.
- Hexagonal holes are much easier to print vs large voids. They also result in stronger parts.
- Zero support needed to print the part on the right. With the extra vertical, huge amounts of support needed.
- Rule of thumb for print orientation- you want for to be perpendicular to layers for bending load, parallel to layers for tension load.