How to cut a 6"tenon in a 6' 2x4?

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Forum topic by MK19 posted 131 days ago 875 views 0 times favorited 6 replies Add to Favorites Watch
View MK19's profile


9 posts in 1596 days

131 days ago

OK, so I have a pair of old concrete bench sides that I had some cedar cut for to make the benches. There are 5 holes, each are 1.5” x 3.5” and I had my cedar cut to full 2”x4” with using tenons to go through the holes and securing them on on the outside with wedges. I was mulling over how I would cut the tenons, as the 2×4’s are 6’ long, so using dados on the table saw would prove difficult. I don’t own a Radial Arm Saw (that would probably be my best bet) and I tried using a router with a straight bit, but there isn’t enough surface area to keep the router flat while I remove material. So, how do I get this done? Do I need to approach doing this by hand? TIA.


6 replies so far

View Loren's profile


7431 posts in 2281 days

#1 posted 131 days ago

Cut out the waste with a router, leaving bands of material
to support the router base. What’s left can be removed
with a chisel.


View MisterBill's profile


337 posts in 885 days

#2 posted 131 days ago

Along the lines of what Loren suggested: make this jig and use your router to make the tenons.

View Shawn Masterson's profile

Shawn Masterson

1253 posts in 581 days

#3 posted 131 days ago

you could cut them on a BS. also I you have a dewalt slider there is a tab on the right hand side with a stop for making shoulder cuts. if you put a 3” block against the fence then your cedar you can cut the shoulder one slice at a time.

View MK19's profile


9 posts in 1596 days

#4 posted 131 days ago

Thanks Loren and MisterBill!!! The jig is going to work perfectly!

View a1Jim's profile


112016 posts in 2210 days

#5 posted 131 days ago

Just cut it on the table saw on a longer piece of 2×4 then cut it off after you have your tenons made. If all you have left is 6” material make a simple tenoning jig and cut the tenons on it.

Or make a small table saw sled


Opps I read your measurements wrong I thought it said 6” material

-- Custom furniture

View bandit571's profile


6851 posts in 1316 days

#6 posted 131 days ago

It’s called kerf cutting

Saw a series of saw cuts to define the tenon

A simple whack with a hammer to knock the leftovers loose

Nice wide chisel to clean it up. Rinse, repeat. Circular saw, or back saw, your choice. Be sure to set the depth of cut. The only cut that need to be perfect is at the tenons shoulder, the rest can be every which way. They will be waste, anyway. Set the depth just a hair shy of finished depth, that is for the chisel to finish up.

By the time you make a jig, and set up a power tool, you can already be paring away to final fit with this….

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

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