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Best TS Blade for cutting miter keys?

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Forum topic by Tom148 posted 713 days ago 1024 views 0 times favorited 7 replies Add to Favorites Watch
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Tom148

39 posts in 767 days


713 days ago

Topic tags/keywords: table saw blades flat bottom kerf miter keys

I am looking for recommendations for the best blade to cut miter keys. I have been working on boxes and don’t like the kerf angles left by my current blade. So I’m interested to hear who is using what to get flat kerfs.

-- Tom


7 replies so far

View DKV's profile

DKV

3053 posts in 1007 days


#1 posted 713 days ago

The Woodworker II box joint blade was designed specifically for cutting flat bottom box/finger joints and spline kerfs. The model number is ww10401125, special #1 OD grind. It works great.
Don

-- 2014 will be a different year...at least for me it will.

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knotscott

5151 posts in 1878 days


#2 posted 713 days ago

Only a blade with a flat top grind (FTG) will leave truly flat bottoms. Most FTG blades are 18 to 24T rip blades, but as DKV mentioned there are some specialty blades for finger joints that should also work well….Forrest, Infinity, Freud, Oshlun, and others offer them.

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

View floridagramps's profile

floridagramps

21 posts in 1895 days


#3 posted 713 days ago

why not try the outside cutter from dado set which should provide a flat bottomed 1/8 inch cut. Then buy 1/8 inch thick contrasting wood from woodcraft or rockler for use as keys?

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knotscott

5151 posts in 1878 days


#4 posted 713 days ago

FG – Most dado sets use an outside cutter with a beveled top grind.

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

View gfadvm's profile

gfadvm

9567 posts in 1193 days


#5 posted 712 days ago

I really like my Freud box cutter set: very sharp,no tearout, and has shown no signs of dulling after over a year of use. Well worth the $100 (and I am a really cheap guy!)

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

View Loren's profile

Loren

6770 posts in 2151 days


#6 posted 712 days ago

You can get any old carbide blade reground for probably about
the cost of a sharpening. It’s easier for the guy doing the
grinding actually because he just grinds them all flat across
in one setup.

View Tom148's profile

Tom148

39 posts in 767 days


#7 posted 712 days ago

Thanks everyone.

I went ahead and bought a FTG Frued ripping blade. We’ll see how that works.

I like the idea of re-purposing an older carbide blade for this application. I have an older sears 40 tooth that might be just the ticket. This is a light duty shallow depth application and won’t benefit much from the modern coatings etc.

Thanks again for the good comments.

-- Tom

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