Years ago, in the 20th century, I picked up a RCBS Manual Brass trimmer at a gunshow for $5. Somebody was cleaning house and on impulse I purchased it. I used it a few times, but quickly tired of it for a few reasons, primaily because I am left handed, and I never could find a cranking position (left or right) that felt natural to me. So it sat on a shelf for a few years until I came across an article online showing this conversion. By modifying the crank with a cordless drill with a rubber tube coupling, it turned a useless (to me) brass cutter to a more efficient easy tool to use. I trim brass about once every 5 years, maybe less, maybe more. So this contraption normally sits on a shelf until needed. And the cordless drill mod makes it super efficient and easy for me to use. All you need to do is remove the Black plastic RCBS knob and leave it off. I just screwed mine to the 2x4 wood base where its been sitting since the mod. Slide a rubber hose over the shaft and clamp the hose in place with hose clamps. Add a bit driver to the other end of the hose for the cordless drill and you are in business.
Larger Pic: https://www.hensleygibbs.com/TCD/MOL...asstrimmer.jpg