Reuleaux Triangle for FDM

thingiverse

This design is an evolution of thing:1088 and thing:1082, drawing inspiration from the enhanced snap of thing:5322. However, it has been completely redrawn from scratch to create a fully parametric pattern instead of relying on the original DXF outlines. The objective is to maximize the potential of 3D printing rather than simply converting laser-cut designs into complex overhangs. The triangle should be entirely encased within the case. Despite appearing overlapped from above, the triangle and case are actually separated by the tolerance margin. As technology advances, modern machines now offer tighter tolerances than when this design was created. Therefore, a new version (reuleaux_assy-05.stl) has been added with a reduced tolerance of 0.5mm for improved print quality without cleaning requirements on an Ender 3 printer. Due to the large square area, warping may occur without a heated build platform. A modified version features 'ears' that seem to prevent warping (thanks to the idea shared by http://blog.makerbot.com/2011/02/25/mouse-ears-defeat-corner-curling-monster/). Upon completion, parts may initially be connected by raft and strings, which should be carefully removed for smooth triangle movement within the case. As all internal faces are 45-degree angles, disassembling any necessary connections will be easy with a knife. Earlier versions of Skeinforge (35 and below) had issues slicing this object correctly, affecting build quality slightly. This issue was resolved between Skeinforge 35 and 40.