Tool sharpening?

Daniel Koster

Daniel Koster

www.kosterknives.com
Knifemaker / Craftsman / Service Provider
Joined
Oct 18, 2001
Messages
20,978
Where can I get the following sharpened?


Checkering file

Carbide-tipped metal-cutting hole saw

Large diameter countersink (1") (high speed steel, coated)



I've asked around locally...haven't got a good response.


Anybody have any of the above...and send them out for sharpening?

Let me know.

Thanks!

Dan
 
i have a frien who used to have a saw sharpening service. i'll see if he still has the equipment to sharpen hole saws with. i can see if he can sharpen your countersink also.
 
I never heard of anyone sharpening a checkering file . The whole saw you might be able to at least touch up with a diamond sharpener of proper size.Perhaps you could do the countersink with a diamond too. I've used a diamond sharpener to sharpen carbide drills to the surprise of some !
 
Technically files can be sharpened in acid. I believe it's a mixture of nitric that does it, but there's some drawbacks; one, nitric acid in your shop, even in a sealed container, will rust any exposed steel for yards around, especially if it's humid. And two, you can only sharpen a file once or twice before the teeth have eroded too far to save, and some old-timers say the tooth profile changes on sharpening.

In my opinion, it's not worth it. Get a new file. Unless it's some whiz-bang file, you'd spend more on acid, time or shipping than it's worth. Set it aside and use it for roughing.

Any halfway-decent sharpening shop should be able to handle the other two, although in the case of the countersink, sharpening will eliminate the coating (which wasn't doing you any good anyway) and may well cost about the same as a new 'sink.

Doc.
 
I have managed to sharpend carbide tips with diamond sharpeners with some success. I cheap diamond sharpener was quickly destroyed, but using a better quality diamond sharpener I have managed to decently sharpen many tips. For the countersink you could also use the diamond or a little grinding wheel on a dremel... On the countersink its more about patience than tools cos you will want to keep all the cutting edges symmetrical to each other.

File. If cleaning it with a wire bristle brush doesnt improve it, I wouldnt think it worth keeping.
 
don't throw the file away! anneal it, then grind it into a knife leaving that nice pattern on the un-ground part. clay coat for a nice hamon :thumbup:
 
dan, are there any chipped teeth on the holesaw or are they just dull? if they are just dull a friend said he can sharpen it for you. also do you know the angle of the teeth? if the teeth are soldered on and badly broke i can get new ones put on. another friend does that. he might even be able to sharpen it since he had a saw sharpening service but i keep missing him when i call. pm me with the info.
 
richard - they have wear marks (deep) but aren't chipped to the point they couldn't be reground.

I'll take a pic tomorrow and post it here.

Thanks!

Dan
 
just as long as the teeth arent chipped is all that matters. with diamond it wont take long to get wear marks out but chips tend to take longer.
 
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