Monday, August 14, 2017

Tiny, tiny chisel

The sharp end looks black because it's been polished to a mirror finish,
and that confuses the hell out of the scanner sensor.

Sometimes you just need a smaller chisel than you have. I found myself in just such a situation, so I sacrificed a cheap little needle file for the task.

I heated the top end to red hot with a butane torch for just a couple of minutes; this isn't enough to completely soften the steel, but it does make it a little bit more workable, and relieves some of the file's very brittle hardness. A better way to do it would be to put it into an oven at about 200-220° for an hour or so, but I didn't want to take the time, because I require INSTANT GRATIFICATION.

I ground off the file's cutting surfaces and polished them all to a mirror finish, and ground and polished the tip to an angle of 30°. This gives me a chisel edge of about 0.9mm wide.

The whole job took about twenty minutes, I guess.