I also make old triangle files into scrapers. In addition I break
off the tang and shape the end of the file into a burnisher so I
can scrape, flip the tool and burnish out the scraped area.
Hey, that makes a lot of sense. Double-ended tools-- I use them a
lot as a dental hygienist.
Until I can get a triangle scraper I am using a dental sharpener
called a Nievert Whittler. Very versatile for scraping, sharpening,
and graving. Made by Interstate Dental in New Hyde Park NY.