New Domino XL Project - Accoya/Tricoya

[jt073]

Hello

I am about to embark on my first major project using the Domino XL.

This will be two pairs of garage doors in a panelled design using Accoya for the door structure and Tricoya for the panels. The doors will be 44/45mm thick and the panels in 15mm Tricoya.

I plan to joint the door using XL Dominos and think it will be best to make my own out of Accoya which will avoid any risk of differential movement (Accoya Technical have confirmed this is a good approach).

My first question (there may be others!) is what Domino layout would people suggest?
- top rails will be 120mm wide
- bottom rails will be 200mm wide
- stiles will be 100mm wide
- there are other centre rails and stiles (the doors are in a 2/3:1/3 pattern with the 2/3 made to look like it is two leaves, although they do not fold.

The options seem to me to be single Dominos of 14mm or twin dominos of 10mm or even 8mm, all plunged to max depth (70mm? check).

I guess the top rails would take two lines of Dominos (ie 2 x 14mm or 4 x 10/8mm) and the bottom rails three lines (ie 3 x 14mm or 6 x 10/8mm).  I would be interested in what anybody thinks on the domino sizing and layout.

The panels will sit in rebates say 10mm deep. I know it would be unconventional, but in the interest of added stiffness and banking on the dimensional stability of the Accoya, I plan to glue the Tricoya panels into the rebates (PU glue is specified for Accoya). I would be interested if anyone has experience of this technique.

Now I have just got to sit down and work out what this is going to cost...!

Cheers

 

[Ollie]

Hi Scholar

Can`t comment too much on the domino position, but having used Accoya a lot recently I will just say a couple of things.

Having recently made 32 sashes from Accoya I found that PU glue varies a lot by brand.
Gorilla glue sticks well but is a nightmare to clean up forming a much tighter harder foam on the squeeze out.

Titebond PU is the best I have found, it glues just as well and foams tightly in the joints but the excess is much larger, crispier bubbles that clean up better.
I have tried others too but Titebond is the best.

I made a large panelled door from Accoya earlier this year

I would hesitate to glue the panels in position with glue, other than a dab top and bottom perhaps. Even though the Accoya or Trycoya won`t move much, the Trycoya is a mdf type product and will move at a different rate.

On my door I used 38mm of marine ply for the raised panels and fixed them with internal beads. I did seal the panel in almost as though it was a glazing unit (made similar thickness too for easy joinery) . For this I used a product caled Dryseal by repair care international. It is very flexible and sticks very well but is not like a silicone. I use it for lots of glazing.
Flexible is key if you are going to seal a panel in a rebate.

Ps. This is made with normal mortice and tenon joints as I don`t have a Domino yet. 48mm thick. About 1200mm wide if I remember.

Sorry edited again after thinking about it for a mo. The rule of thumb for normal tenons is 1/3 the thickness of the section
so mine were 16mm tenon I think. therefore for yours 14mm would be most appropriate, maybe in pairs.

Hope this helps.

Ollie