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Sharpening table saw blades

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Forum topic by Avispex posted 12-26-2011 07:54 AM 1693 views 0 times favorited 5 replies Add to Favorites Watch
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Avispex

6 posts in 2454 days


12-26-2011 07:54 AM

I’m curious if anybody sharpens their own table saw blades. If so, how?

Does it take expensive equipment or is it something that can be learned to do well with a practical home set up like sharpening planes and chisels?

Thanks,

Andy


5 replies so far

View knotscott's profile

knotscott

7214 posts in 2840 days


#1 posted 12-26-2011 03:49 PM

Doing a good job sharpening carbide tipped blades requires high precision machinery that can be very expensive …not recommended for a DIYer.

Harbor Freight sells a $50 blade sharpener that I don’t recommend. Good blades tend to cost in the $50-$100 range, and will last most hobbyists 1-2 years between sharpenings and can be sharpened many times. You can gain access to a good sharpener for $15-$20 for most blades. Cheap blades aren’t worth the effort, and I wouldn’t consider putting a good $50-$100 blade on a $50 sharpener.

Take it to a good pro.

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

View HamS's profile

HamS

1809 posts in 1853 days


#2 posted 12-27-2011 03:38 AM

I just got a blade back from the sharpener, $15 for a 10” 40 tooth combination blade. For that you get teeth jointed reshaped if needed, all the gunk cleaned off, balanced and the teeth dipped in that ily plastic stuff to protect them. I have learned the hard way to keep that stuff on the blade until after you have it mounted in the saw. It saves cuts on the hand. The machine to do all that work can be had for around $6,000. I have considered that as a retirement job, but the ROI on the investment just isn’t there in this area that already has an established service. You really cannot do a carbide blade without the precision grinders.

-- Haming it up in the 'bash.

View MrRon's profile

MrRon

3926 posts in 2708 days


#3 posted 12-27-2011 06:16 PM

I used to be in the saw sharpening business and now that I’m retired, I still sharpen all my own blades. The machine to do this costs around $2500. I’m not an expert as I don’t do it that often. As long as I take my time, I can sharpen a blade pretty good. Your only option is to send it out.

View richgreer's profile

richgreer

4541 posts in 2539 days


#4 posted 12-27-2011 06:54 PM

An old man lives about 5 miles from our home and he sharpens bits for 12ยข a tooth and he does a very good job.

Why bother trying to do it yourself?

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.

View Avispex's profile

Avispex

6 posts in 2454 days


#5 posted 12-27-2011 06:55 PM

Thanks for those comments. I know there is a lot of geometry involved with the angle at which the metal meets the wood and I had been trying to figure out how to build a jig to do this with some kind of diamond hone. As I started trying to think through the degrees of freedom and the necessary precision, plus then being able to rotate the blade and reset everything tooth by tooth I figured I should ask if anybody is actually doing this.

I certainly don’t have the budget for a $2,500 machine and I don’t have the machining skill to build something precise enough for that many degrees of freedom at home. I need to make good friends with a local blade business anyway because I will have plenty of jointer/ planer blades, circular blades, etc that will need to be sharpened as well as some band saw coil stock that I would like to have welded into blades of the right length. Now I just need to find the best shop for the work and start giving them my business.

Thanks all,

Andy

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