question about Rockler's tenoning jig

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Forum topic by leftcoaster posted 07-28-2017 03:28 PM 882 views 0 times favorited 4 replies Add to Favorites Watch
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284 posts in 1484 days

07-28-2017 03:28 PM

In the tenoning jig shown in the image, there’s a lever at the rearmost part of the jig (closest lever in the image).

The lever tilts the supporting plate of the jig to the left, but not all the way to 45 degrees. When would one use this and why the 45 degree limit?

Also, for angled tenons one can turn tilt the supports back to the angle needed for the tenon. However you can’t really flip the workpiece around to make the second cut because it would be angled away. Which technique seems best to folks here?

1) use a piece of scrap to shim the piece out the width of the desired tenon; or

2) slide the support piece over by the same amount?

I’m wondering which would be more successful for sneaking up on the tenon thickness while knowing that moving the plate for repetitive cuts defeats the purpose of dialing it in as one would do if flipping the piece over were an option.

Thank you

4 replies so far

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284 posts in 1484 days

#1 posted 07-28-2017 03:28 PM

View Ocelot's profile


2375 posts in 3246 days

#2 posted 07-28-2017 06:05 PM

I have this jig or one similar.

First, I attached a 3/4” plywood face plate. There are holes for that. This allows you to cut all the way to zero without risking cutting the casting. So, you can cut on both sides and don’t need to flip around to cut the opposite side.

I also attached a digital readout (DRO) to get much more precise positioning.

I’ve got a thread about that somewhere.


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2375 posts in 3246 days

#3 posted 07-28-2017 06:07 PM

Here’s my thread on this.

View TungOil's profile


1372 posts in 1102 days

#4 posted 07-28-2017 06:18 PM

I’m surprised it even goes to 45 deg. Tenons much over 30 deg. are not very strong since you are starting to lose the continuous grain that makes the tenon strong in the first place.

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"

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