Surefeed Microchip Pet Bowl Frame - more reinforced

prusaprinters

This isn't a big change, and the original probably works fine. It's just that I was bothered by those snap-fit legs because the bending load is concentrated at the base. This is the worst possible location for a bending load when a flexible part is printed vertically, because the layer bonds are the weakest feature of any FDM print. The bending load should be uniformly distributed across all the layer bonds.The engineering guidance I've found suggest that the flexing part should taper linearly in cross-section from the base to the tip. This can be done by thickening the part at the base, or making it wider, or both.I typically don't go to 2X the area at the base. It doesn't need to be symmetric either. In this case I tapered the width of each leg, on one side, using OpenSCAD.Print settings0.2 mm layer height, 0.4 mm nozzle3 perimetersOrganic / tree supports for snap hooksMay need mouse ears in corners to prevent them from lifting up (I printed this with a translucent material so you can barely see the mouse ears in the picture)