I came up with this idea to get me back into thinking with portals and to test out the upgrades I did to my homebrew CNC Mill. It’s essentially a variant of the classic Turners Cube (except on a mill instead of a lathe) and shows the overall accuracy and repeatability of the mill.
The design was laid out in Solidworks, and all the G-Code was generated using the BobCAD plugin. The base part was machined from a solid 3” square cube of Aluminum where all the faces were milled and the inside was hogged out. There’s a bottom plate screwed in place that has a BlinkM/MinM RGB LED inside. The heart inserts are .375” Lexan frosted by the machining and buffing with Scotchbrite.
Overall, I’m quite pleased with the results - the mill worked flawlessly, and I was able to hold +/-.005” tolerances without even trying. The surface finish turned out well too, although, I did have to
run the final cuts much slower than on a full sized mill to get the milled sides.