Rubik's 2x2x2 twisty puzzle cube

thingiverse

Design goal was been a easy-to-print 2x2x2. And, at design-start I didn't had found annother 2x2x2 here (It was been, but the search function here didn't found. If you are google 'www.thingiverse.com rubik 2x2x2' there is annother. Step 1: Print the calibrate cube, check if your machine is good. If your measurement is scaled (multiplied) in X and Y then it is ok. If the outline is bigger and the hole is smaller, you have to adjust this in your slicing software. slic3r 1.2.9 and repsnapper provide adjustment parameter. If your slicer doesn't provide this parameter, switch over to annother slicer. I mean, because of the screws the design will tolerate some mismatchs. Step 2: Do not rotate the STL. Slice in the same rotation as shown. No support material required, slice without support. (except mid.stl; this may need support) Print it. Because of the small footprint, maybe you have to use additional glue on printbed. I have stabilized with ABS-juice after 5mm Z-Height. Sandpaper it, remove all blobs. PLA: sandpaper it very very carefully. ABS: I have printed in ABS and acetone vaporized. I have made some test prints in ABS and PLA (with annother design), ABS+vaporization is a much better way for twisty things. If your machine takes PLA only then use PLA. Step 3: paint the outsides (or sticker it). Because of recommended grease it is better to paint before. Step 4: Assembly: Add the M3 nylock nut to the position, come with a M3 rod thru the mid and catch the nut. Pull the nut into the core and thru the center of the core. Unscrew the rod and change immediately to the M3 screw. If get lost inside the core it is hard to catch again. Continue assembly. Don't forget grease. I recommend Vaseline. Because I don't have, I take standard ball bearing grease. twin project:https://www.thingiverse.com/thing:3219527