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Stiffness: WSF vs. ABS vs. Acrylic glass? [message #86244] Sat, 15 March 2014 13:53 UTC Go to next message
avatar feklee  is currently offline feklee
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Suppose I have a 5 mm strong plate of say 200×200 mm footprint. Which of the following materials would make it stiffest?

  • WSF: Shapeways' White Strong & Flexible (Nylon)
  • ABS: 3D printed (FDM) on a Stratasys machine
  • Acrylic glass: laser cut
My assumption: Acrylic glass (stiffest) > ABS > WSF (softest)
Re: Stiffness: WSF vs. ABS vs. Acrylic glass? [message #86570 is a reply to message #86244 ] Sat, 22 March 2014 15:39 UTC Go to previous messageGo to next message
avatar feklee  is currently offline feklee
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On plastruct.com, I found an article about properties of ABS, acrylic, and various other plastics.

They write: "Acrylic is the most rigid and brittle of these plastics."

For comparison of ABS and WSF, I have ordered a set of FDM printed ABS parts from fabberhouse in Germany. The nice thing is that they print in solid black and other colors.
Re: Stiffness: WSF vs. ABS vs. Acrylic glass? [message #87197 is a reply to message #86570 ] Thu, 03 April 2014 09:22 UTC Go to previous message
avatar feklee  is currently offline feklee
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feklee wrote on Sat, 22 March 2014 15:39

For comparison of ABS and WSF, I have ordered a set of FDM printed ABS parts from fabberhouse in Germany.

Yesterday, I received my order. It's hard to tell from the parts, which are quite small, but ABS seems to be more rigid than WSF. At the same time ABS is certainly more brittle: When I bend a thin part it breaks quickly. WSF, on the other hand, can sustain quite a lot of torture before it breaks.

Still, FDM printed ABS is a great material, and I consider using it for a mechanical design.

 
   
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