[fatal-exception]

Hey guys. Just wondering if theres any interest in a device like this. I have a ton of sawblades that needed sharpening, but am too cheap to pay someone else to do it, so I designed this jig. It works so well, that I thought I would post a pic of it.

I would be willing to make and sell them if theres any interest. PM or e-mail me.

I was even able to set it up to grind the tops of the teeth with the proper angles on the blade shown. It's main intent is to sharpen the face of the teeth from 7" to 12" blades.

Paul

[automizer]

thats just neat
how long did it take you to come up with the design?

[fatal-exception]

Thanks, it took about a day to design it, and a day to make it.

Paul

[automizer]

wow im impressed. Wish I had a use for one now

[ger21]

How do you get it to sharpen each tooth the same amount?

[fatal-exception]

Ger, because it takes such little amounts of carbide off the face of the teeth, you can just watch by eye to determine when the entire face of the tooth has been ground, and that the cutting edge of the tooth is sharp. Once you get in the rhythm, it's pretty easy to grind all the teeth more or less the same amount and end up with a like new blade.

Paul

[ger21]

Once you get in the rhythm, it's pretty easy to grind all the teeth more or less the same amount ............

More or less can leave you with a saw blade where not all the teeth are actually cutting, though.

[fatal-exception]

Since cutting with a tablesaw, miter saw, or skill saw is not to cnc precision, the answer would be yes. I agree that the blade will never cut as smooth as a factory cnc ground blade, you will be able to regrind your blades many times and get a very nice cut for years, with a very little time investment.

I worked on a small sawmill for a few years. Gauranteed not all the new (or freshly ground) teeth cut all the time, but as the 'taller' ones wear, the 'lower' ones start to see the action. With care, you can accurately regrind any circular saw blade. This jig enables the user to achieve that type of accuracy with little hassle.

If perfect grinding is what you want, I could design in a stop that only allows you to grind a certain amount off each face. Would this make the jig more useful?

Paul

[FPV_GTp]

fatal-exception ................ very nice jig , I'm sure it wil save time and money for people that need to sharpen their saw blades at home or work instead of waiting for shops to do the service for them.

Great that you have shared this sharpening_jig

cheers

[WeCheat]

Sweet just sweet. Nice work and thanks for sharing.
Greg

[neilw20]

Nice use of the saw bench table slot. Just needs a safety guard ! (LOL)

[ger21]

Didn't mean to sound negative. Just a bit afraid of sharpening my own blades, I guess. But I might have a biger stack of dull blades than you, lol. Expensive ones, too.

Where did you get the diamond wheel at?

[Geof]

It is certainly a more sophisticated way than just free-handing it on a greenstone wheel.

You say a day to make, at my hourly rate that is close to a thousand dollars.

Prersumably you could bang them out quicker in quantity, do you have any idea what the final selling price would be?

[fatal-exception]

Yeah, prototyping new products is labor intensive, even with a well defined solidworks design. I figure this one is probably worth a few grand. Production is a different story.

If and when they go into production, the final selling price will be around 200 bucks + the dremel if I have to supply it.

I've hand ground many a blade in my day, and I'm wondering why I never bothered to build a jig like this in the past. It's safe and precise. What else could you ask for?

As far as a guard, I could design one, but it wouldn't really gaurd anything and would just be in the way (but arent all guards???). The diamond wheel is so fine, that I doubt you could do any damage to your fingers with it!

The diamond wheel comes from Princess Auto for about 7 bucks. It's one of those products from PA actually WORTH the money.

Thanks for the support.

Paul