Included is the DesignSpark Mechanical file and STL exported at high resolution. Recommended printing at 80% infill and 5 or more perimeters and 5 solid top layers (or more) file is for M6 tap CAD file attached to mod to other tap sizes. Use 2 part steel epoxy to set the tap into the handle. by AutoX3D.comI had a Chinese hand tap handle that constantly came apart. I saw the local machine shops TIG welding a handle to thread taps, so I came up with this better solution.