Sharpen hand saw blades?
Nowadays almost all hand saws are induction tempered. It seems such a waste to throw them out all the time after they get dull. Traditional hand saws could be sharpened with a triangular file and a special tool to bend the teeth outward.
I guess sharpening can be done by means of a dremel tool with a diamond disk, but what about the bending of the teeth?
Any suggestions?
Discussions
2 years ago
Try this - my new I'ble:
https://www.instructables.com/id/How-to-Sharpen-a-...
8 years ago
You need a tool called a "Saw set." It bends the teeth to the proper angle. I have an old one that belonged to my Dad. I tried sharpening handsaws a couple of times and decided it was much easier and cheaper, considering the time it took, to have them sharpened by a pro.
Answer 8 years ago
. +1. If you plan on sharpening blades on a regular basis, it might be worthwhile to buy the necessary tools, but, for many DIYers, it's more economical to let a pro do the job.
. If you think it will be worthwhile to sharpen your own blades, there are many tutorials on the Web, unfortunately, I can't find any on Instructables. :( Google is your friend.
Answer 8 years ago
My (perceived?) problem is the transition from the old -tool grade steel- saw blades to the tempered modern blades.
I assume tempered steel is not allowed be bent (the teeth would snap off).
Are you sure this ' saw set' tool works on tempered blades???
Answer 8 years ago
. Not real sure. The whole idea behind tempering is to make the metal less brittle/more ductile. I'm no metallurgist but it seems to me that tempering should make the blades amenable to the slight bending involved.
Answer 8 years ago
This is a terminology glitch: I thought the proper word for 'hardened steel' was 'tempered'. When working in steel machining we did some hardening: heating in an oven, I think about 900 C, cooling in water (or with alloyed steel oil or even air) and subsequently re-heating I think about 500 C and slowly cooling down. This step was called tempering (Dutch: ontlaten). There was another procedure for re-heating to, I think 650 C, to make the steel less hard, but still very tough and strong (Dutch: veredelen)
Answer 8 years ago
No, I'm not sure at all but I presume it depends on the saw. I have always used older, cold rolled steel handsaws that were made to be re-sharpened, Disston, Sandvik, etc.
I acquired all of my saws more than 20 years ago, some from my Dad and the rest from various sources, new and used.
If I were looking to buy a hand saw, I would try to find an older one that still has some blade left. Making handles for the older saws is fairly easy, probably 1/3 of my saws have handles I made myself.
8 years ago
You'd need a heat treatment or two in there - soften, sharpen, harden. If the sharp surface is induction-tempered steel you'll ned to replace rather than repair.
L
8 years ago
Unless you abuse your saws, you should be able to touch up the sharp of the teeth with out having to use a saw set.