3D Printing: And its use in RC Modeling

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3D PrintingAnd its use in RC Modeling
Dan Frey 17 NOV 2015
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3D Printing

• Makes part from CAD files (STL format)
• Builds layer by layer
• 0.010 thick (or thinner)
• Thermoplastic materials (ABS, PLA, Nylon) mostly
• Machines now as low as 175, many 500, can be
  gt30K
• Or outsource your parts

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3D Printing Technologies

• Stereolithography
• ZPrinting (liquid binding of powder)
• Selective laser sintering
• Mask image projection
• Fused deposition modeling (extrusion deposition)

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Dimension uPrint

• Fused deposition
• ABS thermoplastic
• Support material dissolves in solution of NaOH
  and detergent
• Good for large overhangs and possibly for
  assemblies with relative motion among parts
• Build volume 8 x 6 x 6 in
• 30K

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MakerBot

• Fused deposition
• ABS or PLA
• Some have thermally controlled environment
• Heated bed
• Build volume 10x10x12cm
• 1400 (mini) up to 6500

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Fabrikator Mini

• Fused deposition
• ABS or PLA
• No thermally controlled environment
• No heated bed (masking tape used as bed surface)
• Build volume 8 x 8 x 8 cm
• 180 (plus shipping)

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PLA Plastic

• 30/kg

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Form 2

• SLA technology (liquid selectively polymerized by
  laser)
• 0.0055 layers
• Object pulled from above
• 14.5 14.5 17.5 cm build vol.
• Waxy support material removed using high pressure
  water spray
• 3500

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Objet Connex

• Mask image projection (sprays 8106
  dropslets/sec)
• 0.0006 layers
• 19x15x8 build vol.
• Waxy support material removed using high pressure
  water spray
• Digital Materials let you incorporate a range of
  hardnesses, opacities, shades or thermal
  properties into a single model

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eos Formiga

• Selective Laser Sintering (SLS)
• 0.06mm layers
• No support material needed (unbound powder
  inherently supports the part)
• Machine 1M

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Outsourcing (rather than owning a 3D printer)

• e.g. shapeways.com
• Has SLS nylon parts (strong and flexible
  plastic)

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Materials

• Wood
• Alum
• 3D print

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Mark One Composite 3D Printer

• Fused deposition
• Carbon fiber, fiberglass, nylon
• Machine 5.5K