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Table Saw Blades, some thinking ...

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Forum topic by yuri posted 589 days ago 803 views 0 times favorited 9 replies Add to Favorites Watch
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yuri

135 posts in 2200 days


589 days ago

Lately, I gave little bit more attention to table saw blades. I almost exclusively use general purpose 40T blades. I have Carbide TS2000 TK (thin kerf), Onsrud TK Freud Diablo inexpensive TK. My go to most is Freud. Recently I read American Woodworker’s (more then 10 years old) article about different blades and start thinking about quality. Even more precisely, what makes one blade better than other. I can undestand thing in design, such as tolerance to deflection, less noise, quality and size of carbide teeth and etc. But I think one of the most importance how they are sharpened. I guess each manufacturer have it’s own “secrets” on that, like different angles, edge relief, fineness of used abrasives … You got the idea. Another hot topic I frequently see is saw sharpening once it became dull. People ask for recommendation on where to send blades for sharpening.
Well, it turned out too long, but now the main thing which bothers me. Once a blade sharpened by some independent service provide don’t the blade loose it’s original, let say, “signature” cut? I don’t think that sharpening services adapt or retain original “handwriting”, they have just there own. If I send several different (manufacturer) comparable in quality blades to the same sharpening center, should they behave closer to each other than they were before? I’ve never had my blades resharpened, so can not judge, but let’s talk about this.


9 replies so far

View Tedstor's profile

Tedstor

1369 posts in 1229 days


#1 posted 589 days ago

My favorite sharpening service claims their process will make a blade better than new. Not only do they sharpen the teeth, but they also “true” and balance the blade as well. I’ve never personally had my TS blades sharpened by them, but they do a heck of a job on my jointer blades.

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Grandpa

3044 posts in 1272 days


#2 posted 589 days ago

Yes you are correct in your thinking. When they are sharpened they have new angles and the original intent is gone. They could be sharpened with the same angles but that requires setting the machine for every blade. That takes time and time is money so there you are.

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yuri

135 posts in 2200 days


#3 posted 589 days ago

Grandpa, that is what I am thinking. Let say original WWII blade will exactly it until it’s sent to sharpening center, though one can always to use WW sharpening service to keep it original.

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Grandpa

3044 posts in 1272 days


#4 posted 589 days ago

I think your correct. My friend had some specialty blades for cutting melamine. He had them sharpened by Charley’s Sharpening and they were only suitable for rough framing afterward.

View a1Jim's profile

a1Jim

111999 posts in 2174 days


#5 posted 589 days ago

I know many folks got into the science behind table saw blades . To me there are blades for cross cutting and ripping blades and dado blades other than dado blades needing to be a stacked blade type that cuts a flat bottom and has enough chippers and spacers ,I don’t sweat it other than my dado blade I buy a $20 blade with the correct amount of teeth needed for the operation there design to do,cross cut or rip and these blades last for years. Do I look at their cut with a microscope ? No what’s the point they do what I need done, cut wood cleanly without tear out or burning,end of story.

-- http://artisticwoodstudio.com Custom furniture

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Surfside

3036 posts in 770 days


#6 posted 589 days ago

IMHO, saw blades don’t run the same after resharpening . This happens all the time.

-- "someone has to be wounded for others to be saved, someone has to sacrifice for others to feel happiness, someone has to die so others could live"

View Bill White's profile

Bill White

3342 posts in 2557 days


#7 posted 589 days ago

Don’t EVEN get me spewwing about crappy sharpening…..
Wanna ask me about tryin’ to get long (as in industrial) planer blades sharpened?
Try to ask some nitwit about sharpening details.
I have scrapped otherwise good blade stock ‘cause sharpening services screwed ‘em up.
Got a good sharpening service in the Southeast?
Bill

-- bill@magraphics.us

View knotscott's profile

knotscott

5367 posts in 1972 days


#8 posted 589 days ago

Sharpening is a huge factor, and is a variable when comparing blades. Even if two identical blades were sharpened at the same place, there’s no guarantee that the blades will have identical performance….they should, but not always. I think that explains a lot of the dissenting opinions on common blades…..some folks love the their WWII (or Fusion or CMT or Gold Medal or TS2000 or Super General, etc.), but some weren’t impressed. Did those who weren’t impressed have a poorly sharpened blade? Was their saw incapable of revealing fine differences? Was the wood different? Who knows, but there are definitely variables involved, and sharpening is a big one IMO.

IIRC, your TS2000 is sharpened to 1200 grit, while most other premium blades stop at 600 grit. There is a point at which the finer grits become overkill…I’d guess that 400-600 grit is close to that point, and I suspect that any advantage in the 1200 grit sharpening lasts for about 97 seconds before the super duper fine edge from 1200 grit abrades back to the super fine edge that’s closer to 600 grit. That’s figuratively speaking for sure….I have no data, but you get the idea….the finer the edge the less durable it is.

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

View gfadvm's profile

gfadvm

10538 posts in 1287 days


#9 posted 589 days ago

My Freud Diablo blades actually seem sharper than new after I get them resharpened. I use Best Grinding in Tulsa, Ok.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

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