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Laminating door stiles out of solid Mat.

9/27/21       
gary

Sometimes for 1/38" doors I would like to laminate two layers of 4/4 material face to face to mill the stiles out of. Does anyone know if only having 2 layers/one glue joint is ok or is three layers/2 glue joint better balanced ?

9/27/21       #2: Laminating door stiles out of solid ...
perley bowen

I have done it that way for a long time with no problems. Have done oak one side with cherry on the other.

9/28/21       #3: Laminating door stiles out of solid ...
Adam

Twenty five years ago we did an entire mansions 1 3/4" interior doors out of solid cherry. We built them out of 2 pieces. No issues whatsoever.

Which is more stable 1 solid piece of face sawn or 2 pieces of face sawn laminated? I've built hundreds of doors from solid.

People think of it as an imbalanced panel section like plywood. It's not a fair comparison. They are saying 4 ply will warp(it will) vs 3 or 5 which won't(they still do to some extent). Multiple thin veneers
going in opposing grain directions is not the same as 2 thick solid chunks of stable wood glued together a very thin glue that is the equivalent to the lignin.

9/28/21       #4: Laminating door stiles out of solid ...
gary

Adam: I just want to be clear what you are describing. You laminated 2 pieces of, for example, 5/4 X 5" material face to face to net your door stile material around 2" thick by 5" wide. Correct ?
Then face joint and surface to 1-13/16", do all the joinery, glue the doors together and out of the wide belt at 1-3/4"

9/29/21       #5: Laminating door stiles out of solid ...
Adam

Yes

The door construction choices we use in order:

1. solid if the wood is available, high
quality, stable.

2.solid 2 piece
3. solid 3 piece
4. stave core with the same wood or equivalent
5. lvl type door core

It comes down to size/design of door, how many(economics of scale), and the spec.

Let's do a thought experiment.

1 piece of 3/4" x 5" x 80" stile. It naturally bows 1/16" over it's length.

If you glued another to it you are either keeping the 1/16" bow or balancing it to 0 bow.

If you did the above and then glued a 3rd one on what happens? The 1/16" bow stays if they are all facing the same way. If they are glued randomly it will still bow about 1/32". That's the averaging the bow.

If you used a solid piece of 1 1/2" of the same wood the bow would be 1/16".

So in theory 2 piece is same or better than 1. 3 piece is either same as solid & 2 or slightly better.

Keeping in mind none of that should matter much if you are using stable wood that is appropriate for making doors.

My point is unbalanced panel theory doesn't apply to glueing two sticks together.


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