stile and rail fit

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Forum topic by KellyB posted 03-07-2015 07:46 PM 802 views 0 times favorited 5 replies Add to Favorites Watch
View KellyB's profile


77 posts in 1179 days

03-07-2015 07:46 PM

I copied this image from another post here.
My question has to do with the fit of the tenon in the mortise. There is a bit of a gap between the end of the tenon and the bottom of the mortise. Is this normal? Or is there a bit of bad machining in my Freud bit set. There is a provision for lengthening the tenon and mortise which I could use to lengthen just the tenon a bit. The difference is only about .025, and while it is not a lot, it is still visible.

Am I being nuts? (be kind) or is this to allow for some sort of expansion. or what.

Thanks again.

5 replies so far

View jerryminer's profile


923 posts in 1438 days

#1 posted 03-07-2015 07:53 PM

I would leave it alone. The advantage of a small gap there is that it ensures that the joint will close up tight at the surface, where it shows

-- Jerry, making sawdust professionally since 1976

View bondogaposis's profile


4727 posts in 2348 days

#2 posted 03-07-2015 08:11 PM

Yes, that is normal and advantageous. It allows a gap free fit on the face.

-- Bondo Gaposis

View Patch2020's profile


97 posts in 1238 days

#3 posted 03-07-2015 08:32 PM

It allows the surface to fit flush while allowing room for the glue in the joint.

-- Patch2020, Tennessee

View KellyB's profile


77 posts in 1179 days

#4 posted 03-07-2015 09:58 PM

thanks all.
I think I have learned more on this forum in a week than I have in quite awhile.

View cabmaker's profile


1730 posts in 2805 days

#5 posted 03-08-2015 12:14 AM

While there is some validity to bondos post looks like u need to tweak your height adjustment a tad. You’ll know when it’s on

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