I'm a math teacher and would like a solid of constant diameter created. I don't know how to create 3-d models, but have made a 2-d model which needs to be spun around the red dotted line (see attached). The shape is made with an equilateral triangle and then arcs with a radius the same as the side lengths of the triangle. If anyone is willing to prepare this model so I can order several 3-d printings of this, that would be much appreciated. I would like the side lengths of the triangle to be 1 inch wide.

• Attachment: Constant Width Triangle.JPG
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[Updated on: Thu, 17 May 2012 00:45 UTC]

• Attachment: TRIANGLE.STL
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CADNinja wrote on Thu, 17 May 2012 01:48

.stl file is available

No offense, bro', but...



Isn't this one too fat ?
Shouldn't it be 25,4 mm in all axis ?

• Attachment: NetFabb.png
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• Attachment: Reuleaux tetrahedron.stl
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[Updated on: Thu, 17 May 2012 13:34 UTC]

I've got some solids of constant width in my Shapeways shop that are 3cm wide.
What is an inch?

Reuleaux triangle, rounded Reuleaux triangle and Reuleaux pentagon

Meissner Tetrahedra (not in my shop but also 3cm width, very tricky to design)

very rounded Reuleaux triangle, rounded Reuleaux pentagon and Reuleaux heptagon

They are a lot of fun to play with!

[Updated on: Thu, 17 May 2012 22:15 UTC]

[Updated on: Mon, 21 May 2012 17:48 UTC]

[Updated on: Mon, 21 May 2012 17:49 UTC]