My dad gave me a big box of cold chisels, punches, and other stuff. Most of the tools are in pretty rough condition, with a mushroomed face on one end and a chipped edge on the other. Can I grind ...

It's impossible to get a sharp edge on a chisel or plane if the back of the blade isn't flat. If you're using glass and sandpaper, press the back side of the blade against the sandpaper and move the ...