I figured out how to fuse a crack on vintage celluloid, like this Ladies Hundred Year Pen. However next time I will over fill the crack and let it cure for a few weeks before I sand it down. This was done with a mix of powered celluloid (filed from old celluloid parts) and MEK.
So today I got a Wahl Doric and it has a big crack on the barrel. I do not think it goes all the way through the barrel wall as the section is nice and tight. Here are some pics.
And at a greater Magnification.
And my highest Magnification
The question here is will I do more harm than good with I fuse this crack like I did for the other part?