kenbu wrote:Hi folks. I'm new to turning on the Shopsmith and wondering about options for sharpening chisels. I have the sharpening guide, but am looking for an alternative to multiple $55 (!) sanding disks to hold different grits. Are plywood DIY disks feasible? How about using an old saw blade? If sanding disks are the best tool, are they reversible, so each side could have a different grit? Finally, Penn State has an inexpensive product called "Chisel Mate," an 8" aluminum disk that uses interchangeable Velcro disks. Does anyone have experience using this for chisel sharpening on the Shopsmith with a 1x8 tpi adapter?
Thanks for your comments and suggestions.
-Ken
Lots of questions and here are a few answers/opinions:
#1: Shopsmith also has a velcro system for their sanding disk system. As others have pointed out, SS does not recommend it for sharpening but I do use it for that purpose - you just have to be careful not to get the item you are sharpening too hot (the velcro will melt! Not a good thing).
#2: I cheated a bit on my sanding disk by putting a finer grit sandpaper disk (with a much smaller diameter) over the
top of the normal 120 grit paper I had been using. Used rubber cement as I remember it. Sharpen on the outside couple of inches and then move in to the inside to finish up.
#3: You can buy some used SS sanding disks and keep them setup with different grits.
#4: There are some nice little combo machines available - strip sander + small disk sander from Ryobi et al (under $100).
#5: You can certainly whip up some plywood disks on a hub and use them.
Don't forget that if you are sharpening lathe chisels it is awfully nice to have a sharpening setup that does
not use the SS!
There are lots of ways to sharpen tools - each has strengths and weaknesses. As a note, I have pretty much switched over to a non-SS system (a 8" slow speed grinder with some GOOD wheels, a diamond card, oil and water stones and a few sharpening guides).