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Sliding dovetails to tie two sections of an exterior door together

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Forum topic by Gregg M. posted 04-21-2016 01:11 PM 391 views 0 times favorited 4 replies Add to Favorites Watch
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Gregg M.

171 posts in 1150 days


04-21-2016 01:11 PM

Topic tags/keywords: question how to jig

I am making an entry door that was featured in an article by Fine Home Building. The article is called “Build a High-Performance Exterior Door” by Ben Graham and Mike Lamp. The plans call for a sandwiching two 3/4” doors between insulation. Sliding dovetails are used with cleats to tie the two separate doors together from the inside. I would like some thoughts on how best to go about milling the sliding dovetails. see pictures below. Both interior sides of each door require a dovetail. The plan also calls for a 30 degree dovetail. Does anyone know where to find a 30 degree dovetail bit?

The door

Inside of exterior side of door

Attaching interior side of door

Thanks,

Gregg

-- Marvel Woodworking, West Chester, PA - http://www.MarvelWoodworking.com


4 replies so far

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BurlyBob

3697 posts in 1733 days


#1 posted 04-21-2016 02:19 PM

My suggestion is to call Whiteside. I’m pretty sure if they don’t have one they’ll mill you one.

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rwe2156

2200 posts in 949 days


#2 posted 04-21-2016 04:45 PM

My first thought is “why 30 degrees?” it sounds very strange to me the more acute the angle the weaker that long grain will be.

I think a standard 7-10 degree DT bit will work just as well.

-- Everything is a prototype thats why its one of a kind!!

View Gregg M.'s profile

Gregg M.

171 posts in 1150 days


#3 posted 04-22-2016 06:59 PM

Thanks for the suggestion. I like Whiteside and buy most of my bits from them.


My suggestion is to call Whiteside. I m pretty sure if they don t have one they ll mill you one.

- BurlyBob


-- Marvel Woodworking, West Chester, PA - http://www.MarvelWoodworking.com

View Gregg M.'s profile

Gregg M.

171 posts in 1150 days


#4 posted 04-22-2016 07:02 PM

In the article they say to use a 30 degree dovetail 1/4” deep. I guess it is due to the dovetail’s depth. But you are probably correct, that it it isn’t necessary.


My first thought is “why 30 degrees?” it sounds very strange to me the more acute the angle the weaker that long grain will be.

I think a standard 7-10 degree DT bit will work just as well.

- rwe2156


-- Marvel Woodworking, West Chester, PA - http://www.MarvelWoodworking.com

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