Special Grind Box Joint Blade

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by RandyinFlorida posted 05-16-2016 02:15 PM 664 views 0 times favorited 10 replies Add to Favorites Watch
View RandyinFlorida's profile


172 posts in 1491 days

05-16-2016 02:15 PM

Topic tags/keywords: box joints saw blades table saw incra i-box i_box flat ground raker tablesaw

The Incra I_Box User’s Manual suggests “You can cut delicate 1/8” box joints using standard 1/8” kerf table saw blades, but you’ll want to choose a blade that features a flat ground raker tooth or a special box joint grind like
those from Forrest and Ridge Carbide.”

These blades are pretty expensive; ranging from $89 for a 6” blade on up to $2-300. Anybody have an alternative? Of course my Big Box store has nothing. They all leave a rounded, high in the middle, bottom.

Yes, most men want a nice rounded bottom. But I need mine flat. lol

-- Randy in Crestview Florida, Wood Rocks!

10 replies so far

View Picklehead's profile


993 posts in 1353 days

#1 posted 05-16-2016 04:57 PM

How about a 4 winged chipper from a dado set? I frequently use mine (Freud 4 wing) to cut flat-bottomed grooves without using the outside blades. For example, the grooves in the Quoridor board.

-- You've got to be smarter than the tree.

View bbasiaga's profile


732 posts in 1419 days

#2 posted 05-16-2016 05:28 PM

My brother just bought a two blade box joint set for I think $99 from Woodcraft. A Freud I think.


-- Part of engineering is to know when to put your calculator down and pick up your tools.

View BigYin's profile


338 posts in 1840 days

#3 posted 05-16-2016 05:47 PM

Phone a saw sharpener and ask if they can recut the teeth of a blade to flat top instead of raked

-- ... Never Apologise For Being Right ...

View bandit571's profile


14094 posts in 2107 days

#4 posted 05-16-2016 06:10 PM

Backsaw and the right sized chisel….

-- A Planer? I'M the planer, this is what I use

View DirtyMike's profile


386 posts in 326 days

#5 posted 05-16-2016 06:10 PM

how about a flat top ground ripping blade?

View HorizontalMike's profile


7067 posts in 2338 days

#6 posted 05-16-2016 06:24 PM

how about a flat top ground ripping blade?
- DirtyMike

BINGO! I was just thinking about my 24T Freud. IMO, the answer… 8-)

-- HorizontalMike -- "Woodpeckers understand..."

View Rentvent's profile


144 posts in 273 days

#7 posted 05-16-2016 06:27 PM

Flat Tooth Grind saw blade

Be careful to get one that is truly FTG on all teeth – not a combination FTG blade.

View HorizontalMike's profile


7067 posts in 2338 days

#8 posted 06-10-2016 11:40 PM

Personally, I ended up with the Freud Box Cutter Blade:

Not ready for dovetail joints, but this is an easy alternative and actually just as strong in joining.

-- HorizontalMike -- "Woodpeckers understand..."

View DanielP's profile


475 posts in 1316 days

#9 posted 06-12-2016 04:31 PM

Infinity makes a .125 kerf flat grind listed for 49.90 in the latest catalogue they sent. They also have 8” .156” kerf and .250” kerf flat grind.

I have the .156 and am very happy with it, as opposed to the Forrest 3/16”/3/8” box joint set which chipped a tooth and rusted badly

-- --- Dan

View xeddog's profile


108 posts in 2431 days

#10 posted 06-13-2016 04:45 PM

I was at a woodworking show in Sacramento years ago, and Forrest had a booth there. One of their show specials was a WoodWorker II blade with a special grind for box joints, so I bought one. If anyone is interested, I think you can still order the WWII with special grind #1.


Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics