Reuleaux Triangle

thingiverse

Couldn't find a decent 3D model of Reuleaux triangle (constant radius) available online, or others were modeled incorrectly. Decided to have a go myself. I believe this is a good challenge for modelers. I will use this in a 2 part silicone mold to make plaster copies as inspired by http://fab.cba.mit.edu/classes/863.11/people/paulina.mustafa/02.html &http://vloggest.com/watch/adam-savage-mini-science-fair-project-1070148843/ both of which I believe show incorrectly modeled triangles, which you can tell because the vertices should be indistinguishable however on those there is a clear bottom/top. Print Settings Printer: Hacked Davinci 1.0 Rafts: No Supports: No Resolution: Fine/Standard Infill: 10-20% Notes: I will print in ABS and vapor polish to make smooth for casting later How I Designed This Solidworks Modeled in Solidworks by intersection of circular pattern of a revolve, then circular pattern of that intersection about another axis, and finally combining the common area of these 3 solid bodies. sketch equilateral triangle with arcs of radius equal to that of triangle side length, revolve two arcs and triangle area around opposite triangle side to create disc insert reference axis from intersection of two planes and circular pattern the BODY around this axis 3-fold intersect these bodies and remove the outer areas create 3d sketch and create two more reference planes then reference axis going that goes to another tetrahedron vertex circular pattern around this axis, same as before I ran into a problem when trying to use intersect (weird anomaly in model) so I dropped down the list of 3 solid bodies in feature tree and chose to combine them, using the common area. After this I sectioned into two printable parts and uploaded whole, top, and bottom STL's to make it printable.