TB3 vs epoxy

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Forum topic by levik posted 05-04-2014 04:13 PM 933 views 0 times favorited 4 replies Add to Favorites Watch
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11 posts in 2242 days

05-04-2014 04:13 PM

Topic tags/keywords: exterior door glue epoxy sapele

Hello all!
I’m in the process of building a set of carriage doors. Using mortise and tenon joinery. Tenons are 2-1/2”.
I’ve been back and forth about glue. Even though this topic has been discussed plenty I’d still like to have someone with past experience in exterior doors to chime in. All is appreciated
The wood is sapele and each door measures 48×72.
Also, would 1/8” be a sufficient gap between jamb and door and between each door?
Thanks in advance

4 replies so far

View woodchuckerNJ's profile


1269 posts in 1596 days

#1 posted 05-04-2014 04:32 PM

The glue won’t matter. Both will do the job well.
If you don’t have good fitting M&T then epoxy. If the joints are properly tight TB3.

I would peg those doors from the inside. I would not go through with the peg. And I would draw it slightly (since it’s not through, you can draw it fully. Just a slight amount.

-- Jeff NJ

View levik's profile


11 posts in 2242 days

#2 posted 05-04-2014 04:44 PM

Could you elaborate on what you mean by drawing.

View thetinman's profile


294 posts in 1501 days

#3 posted 05-04-2014 09:32 PM


My understanding of “drawing” a peg or dowel is to offset the hole rather than just drilling straight through both the mortise and tenon. The process I use is to drill the mortise, insert the tenon and mark the center of the hole on the tenon using a brad point drill bit. Then I pull the joint apart and drill the tenon slightly off of center towards the shoulder. This “draws” the joint together. I hope this is what he means. It’s what I know.

-- Life is what happens to you while you are planning better things -Mark Twain

View levik's profile


11 posts in 2242 days

#4 posted 05-04-2014 11:04 PM

That makes sense, thank you.

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