FIXED: SDS Drill Bit Holder - Parametric (& OpenSCAD functions)

thingiverse

I had a few long SDS* drill bits rattling around. So I made a holder. It is for 10mm shank SDS and for 12mm, 16mm & 24mm bits, but it's parametric so you can make your own. FIXED See SDS Holder v5.scad - Now works for bit sizes smaller than shank size too. Also introduced a couple of extra functions, in VectorMath v2.scad. To do this I needed some creative maths. I came up with min/max/sum functions for a vector. In case they are useful I have included VectorMath.scad which you can use as a library. NOTE: The sumv() second parameter is not optional, it must be the n-1'st last element to sum, so if you want to total use len(v)-1. I have updated VectorMath.scad * Wikipedia "Developed by Bosch in 1975 for hammer drills, the SDS System uses an SDS Shank which is a cylindrical shank with indentations to be held by the chuck. A tool is inserted into the chuck by pressing in, and is locked in place until a separate lock release is used." Instructions You can include a vector of bit sizes and it produces one end for the SDS Shank, and another for the particular bit sizes (remember to measure including the carbide tip). I suggest the two larger sized bits go at each end. Optionally include a hole for a bungie cord hook to clip them together, or a different hook, the squarish one (not printed yet), for an elastic band etc, this has a small support tab which needs to be removed. I have issues with inside circles being too tight, so I have the tolerance variable, adjust to suit your printer/software. Do a test with one 10mm bit to save plastic. Suits thick layers; perimiters/infill depends on how roughly you are going to treat them.