Slim 2x2x2 Twisty Puzzle

This is a set of eight extensions to be glued to a 24mm 2x2x2 to make a slim 2x2x2. I have a whole series of different shapes of slim 2x2x2s on this account, although this is just the classic slim 2x2x2. For a 24mm 2x2x2, I recommend the 'Mini Eastsheen', although the one for sale at the Cubicle is fine as well. I have not made one of these yet, no-one has in fact (at least with my design)! It however is exactly the right size in CAD software. I guess some cleanup work may be needed post-printin