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wire stripping tool for collecting copper
designed for strip a lot of wiresMaker/DIY
Creative Commons Public Domain Dedication
All rights to this work are waived and you can use it however you please.
acturally it can be designed to use 2 bearing instead of 4, but i'm lazy to do that... it uses four 22 mm OD, 8 mm ID, 7 mm thick regular size bearings, with a regular sheet rock knife blade extra from 3d printed parts. i twist the knife holder 30 degrees so that it would be easier to print out with the printer. otherwise it does looks like a sheet rock knife, and works perfect on cutting thin stuff while protects the blade pretty well. hopingly some factory can redesign and produce something like this? watch out of the blade end, for i did not put any protection design on the sharp end. it won't kill but hurt pretty much if not be careful. otherwise, you need a screw driver to push the blade in and out, a little inconvenient from my lazy XD.
Materials and methods
i used pla but i guess nylon works better.. most things are tight fit except the rotor, to the holder. need to push the 4 bearings (22 mm OD * 8 mm ID * 7 mm thick) into the rotor and knife blade, then put rotor on the bigger area side and knife blade on the small side of the holder. then try to knock the pin into each one, and adjust the rotor so it could spin. last step to put the knife blade (regular sheet rock knife blade) in the blade holder, and push it in with a screw driver. and watch out don't cut yourself then!
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