Deburr Tool Handle Adapter

I bought some deburring blades (bits?) but instead of buying a handle for them I planned on printing one.  After giving it some thought I realized I already have handle-shaped things lying around - those screwdrivers that just seem to turn up out of nowhere.  So I iterated a few designs and what I'm posting is the result that works well for me.

Simply print this piece, drill a hole in the screw driver cap, and you've got yourself a handle for your deburring blades.

Print Settings

Here are the settings that I used:

Assembly

The first time the piece is inserted into the screwdriver it takes a decent amount of force.  The “fingers” are breaking free from the overhangs above them.  I haven't had any fingers break with this iteration of the design but they are small so it is possible.

Drill a hole through the center of the screwdriver cap.  The size of the hole drilled into the screwdriver cap isn't too critical, just so long as it is bigger than the diameter of the deburring blade.

Insert the deburring blade into this 3D printed piece.  The first time will be difficult.  Try to press it in as-is but if that doesn't work use a drill bit to expand the hole slightly.  This will get easier with each insertion.

Insert both into the screwdriver.  As it enters, the "fingers" are pressed inwards which grips onto the blade.  The first time the piece is inserted it takes a decent amount of force because the fingers are breaking free from the overhangs above them.  It's possible that they will break but I haven't had any break off with this iteration of the design.

Thread the cap onto the blade and fasten it onto the screwdriver.  A larger hole in the cap makes this step easier.

Parts

Screwdriver I don't know what to call these screwdrivers.  I bought one at a bookstore, got one free with a piece of electronics, and my third must have appeared overnight because I don't remember where it came from.

Deburr Blade The ones I have are 1/8" (3.2mm) in diameter and have a groove about 1/2" (12.5mm) from the end.

Design

I designed this using OnShape.  The link to the model is here.