Well I'm neither really (though I suppose I ought to be) and I did my share of scraping bearings in and scraping bed-ways and even clutch gluts, as an apprentice back in the 50's / 60's. In keeping with the theme of the thread, the only scraper I now own is a re-purposed three-square file about 4" long that I use to de-burr some drilled holes.only retired or redundant!
There are various bits of info about the interweb about how to chemically sharpen metal files. As I recall, you dip them in some kind of weak acid for a length of time - until the acid eats enough metal from each blunt serration such that it again comes to a point.
I'm sceptical wether the acid etch process for sharpening files is either effective or financially viable, but in either case the result won't be as good as a newly cut file. Drawing from over fifty years experience in engineering manufacturing, I know there are two main factors which will affect a files cutting ability:
Well for my pennyworth a worn out old file is just that - fit for recycling as scrap!
The amount of hassle that others have described to make something else that probably will never be as good as a purpose made item imo seems a waste of time and resources - well Ive said it - maybe the only person with that opinion, ah well
Spot on, and profound. I couldn't agree more. I make furniture because I like the process. That's also why I cut joints rather than use dominoes or the like. There are some who would buy that fantasy machine which you stack wood in a hopper at the top, press a button and a completed piece of furniture pops out of the bottom. They're in it for the end result, and the means of getting it isn't critical. My enjoyment is less from the result than from the process, and such a magic machine would spoil it for me......I enjoy the process as well as the end result.......