This rack is great for keeping your CNC collets handy. This was my first project with a ShopBot Desktop CNC Router, but you could also 3D-print this.You can 3D printer this rack or make it with a CNC router. I made mine out of a thick pine board, using this project as my first learning experience with a ShopBot Desktop CNC router. I used 3 different tools/bits, with 3 total tool changes, in making it: First, I cut the inside pockets and the top half of the perimeter cut with a 1/4" flat endmill. Then I drilled the mounting holes (centered in 4 of the collet holes) with a #30 drill. During the tool change, I screwed down the part with pan-head wood screws through the #30 holes I just drilled. Next I changed to an1/8" roundover mill to smooth the edges. Finally, I changed back to the 1/4" flat endmill to finish the bottom half of the perimeter cut. Good luck!