edges after you drill holes in metal enclosures? it's like a little hook on a stick that you turn around in the hole and it cuts off all the excess metal
the girlfriend's dad has a few i've used once before. it's not heavy equipment or anything, it's about the size of a jeweller screwdriver.
it seemed safe enough and really quick to use, you just put the hook round the edge of the whole and spin it round a few times. leaves a beautifully smooth edge. but yeah i could use some warden files too i suppose.
i'll ask him and see what they're called. i thought you pedal pros would be using them!
Honestly when I was drilling boxes myself the edges were neat enough with a normal HSS drill bit not to need filing. Most of the boxes I've got now were CNC'd so they're proper neat.
Y'all need to learn your tools. Besides the dude that posted the picture of the deburrer (because he wants a deburring tool). A rat tail file would work okay too. Burrs can get your fingers and make you bleed pretty good.