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Finger Joints with ATB blade

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Forum topic by ChuckH posted 206 days ago 532 views 0 times favorited 8 replies Add to Favorites Watch
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ChuckH

36 posts in 352 days


206 days ago

I just got a new blade, .125 kerf and ATB, I didn’t think much of it at the time honestly. I just made a test cut and there is an undeniable “V” shape in the cut – is this ATB blade going to be ineffective for anything but through cuts?


8 replies so far

View kdc68's profile

kdc68

1924 posts in 863 days


#1 posted 206 days ago

To get a truly flat bottom cut, you will need a blade with a Flat Top Grind (FTG). Lumberjock Knotscott is the blade expert on this site. Perhaps he will see your forum question and offer advice on the best FTG blade

-- Measure "at least" twice and cut once

View RockyTopScott's profile

RockyTopScott

1116 posts in 2064 days


#2 posted 206 days ago

I use a box joint blade to get a good flat bottom result.

-- “When you want to help people, you tell them the truth. When you want to help yourself, you tell them what they want to hear.” ― Thomas Sowell

View pintodeluxe's profile

pintodeluxe

3214 posts in 1399 days


#3 posted 206 days ago

A 50 tooth combination blade is great for joinery work. Otherwise, any ripping blade with a flat top grind will work.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View lepelerin's profile

lepelerin

321 posts in 911 days


#4 posted 206 days ago

here is an excellent post by Knotscott about saw blades
http://lumberjocks.com/knotscott/blog/12395

View ChuckH's profile

ChuckH

36 posts in 352 days


#5 posted 205 days ago

Well… Shucks, I feel dumb now, I read all that stuff before buying a new blade and just didn’t put it together. Thanks everyone, looks like I’m back to shopping :)

View gfadvm's profile

gfadvm

10434 posts in 1276 days


#6 posted 205 days ago

I bought the Freud Box joint cutter blades and have been very pleased with them! They are also useful for rabbets, dados, and half lap joints. Pricy, but one of my better investments.

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

View bigblockyeti's profile

bigblockyeti

1301 posts in 307 days


#7 posted 205 days ago

Of the ATB blades I have, I used them exclusively for through cuts. I have several 50T combination blades, that’s what I usually keep on my table saw. They produce mostly smooth bottom cuts with only slight lines at the edges of the flat bottomed area. Even the side blades on my stacked dado cutter do the same.

View DanielP's profile

DanielP

193 posts in 478 days


#8 posted 205 days ago

Kempston #99312 10” 24 tooth flat 32.99 on Amazon. It has worked well for me.

DanP

-- Dan P.

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