Clamp handle for easy handling of needle files or scrapers for deburring and other post-processing. The principle of clamping the needle file is a collet mechanism. The handle has performed well. You can make any handle size by simply zooming in or out when slicing the model.

If you are going to print the handle with a PLA plastic, i recommend increasing Needle-file-handle-A.STL to 102%. Since the PLA plastic has a very large shrinkage on the horizontal holes, the mating part of the Needle-file-handle-B.STL handle simply will not fit into the first part of the Needle-file-handle-A.STL.

I wish you productive work! Post your makes in the comments!