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Bruno - we are talking about forging old files here. I prefer to anneal the file before I start forging it. This step may be unnecessary, but I just feel more comfortable with the process if I do...

There is a previous post about doing it this way. Do a file razor search. You have to be very careful with heat build up as you grind. If you go over 380 to 400 degrees, the hardness is shot. It...

I have had problems with forging without annealing. Couldn't drill pinning holes. May have had something to do with the temperatures during forging. I will continue to anneal before forging....

Absolutely! Once it's annealed, it is dead soft, and drilling is no problem. That's exactly the problem I had before I figured out it had to be annealed. Good luck with your project.

From my experience with making things from files, it is very important to anneal the file before you start working with it. Heat to just above non-magnetic, and cool very slowly - I use a bucket of...