Well I figured I would just jump right in and try my hand at sharpening 1

Thanks for all the comments guys

I took my ex slim taper Nicholson 3 sided needle file and went all the way down each side filing each tooth going that way so that I would actually hit the teeth on each side of 2 different points

I went at about a 45 degree angle to the saw but you can tell how to file it by just feeling it (if it grabs adjust the angle of the filing until you go through smoothly) once you start it is much easier than I thought

After you do all the teeth look closely at it and make sure all the teeth look fairly uniform and if 1 or so aren't just try and correct it with the file

It took about 10 or 15 minutes and it was in pretty good shape

Sorry if I confused anyone with all of that

if you need to sharpen 1and my directions didn't help just search on the net for ppl hand sharpening hand saws and it is the same principle
