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Finger Joints with ATB blade

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Forum topic by ChuckH posted 12-18-2013 05:05 PM 813 views 0 times favorited 8 replies Add to Favorites Watch
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ChuckH

63 posts in 767 days


12-18-2013 05:05 PM

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

2346 posts in 1278 days


#1 posted 12-18-2013 05:34 PM

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

1184 posts in 2479 days


#2 posted 12-18-2013 05:47 PM

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

4022 posts in 1814 days


#3 posted 12-18-2013 07:15 PM

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

408 posts in 1326 days


#4 posted 12-18-2013 07:42 PM

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

View ChuckH's profile

ChuckH

63 posts in 767 days


#5 posted 12-19-2013 08:43 PM

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

13549 posts in 1691 days


#6 posted 12-20-2013 02:04 AM

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

2362 posts in 721 days


#7 posted 12-20-2013 02:17 AM

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

290 posts in 893 days


#8 posted 12-20-2013 02:28 AM

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

DanP

-- Dan

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