I'm currently going through the tool collection at my makerspace, and I've come across a whole drawer full of old machine-made files and rasps. The previous manager seemed to be a hoarder who never threw out anything, even when tools were worn out. Now I'm stuck with a mix of pretty useless files and some that might still be salvageable. I'm wondering, can I do anything to bring these files back to life without turning my workshop into a full-on sharpening service? Or are they just destined for recycling? I'm also not really interested in keeping them for knife making purposes, even though that was suggested. Any thoughts?
5 Answers
Have you considered sending them to Boggs Tool for resharpening? Their service is really good, and it's pretty affordable. Plus, if they can't fix a file you send, they won’t charge you! Definitely worth checking out their website for pricing.
Old files are made from good carbon steel, so they can be repurposed into knives! A lot of knife makers love using them because you can often pick them up cheaply. You could sell them—albeit cheap—but it's a great recycling option!
I actually use old files to make chisels. If I need a specific shape, I just grind one out of an old file. They can really come in handy! Plus, smaller files work great for making marking knives.
You could try acid sharpening! It’s a neat little trick where you etch the files in vinegar for about a day. It works okay a few times, and it’s super cheap to do. Just don’t expect miracles after that; they might not last long.
First off, kudos for tackling the hoarding issue! You might not find much use outside of knife making or blacksmithing, but why not just give them away for free in your local market? You’d be surprised how many blacksmiths or hobbyists would jump at the chance to take them off your hands!

Totally agree! I sent a couple of my old files there, and they did a great job. Highly recommend them!