Edge joining 12mm teak planks.

Buck Turgidson

Buck Turgidson

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Is it possible/wise to edge join 2 180mm wide 12mm thick teak planks to make a 360mm board ? Will need 4 in total longest 1 meter others shorter. It's to replace the ply locker tops in my cockpit so they will be bedded onto GRP.
I can't find 360mm wide boards and the price of teak faced ply is almost the same a solid teak where I'm looking. I need it delivered to Spain so that adds a bit to UK suppliers.
 
Possible, yes. Wise, hmm. Personally I would domino them (as I can get access to the machine). You could create similar pockets using a router or a table saw. I guess it depends on how you will react if they start to come apart in a few years time.
 
Hacker said:
Possible, yes. Wise, hmm. Personally I would domino them (as I can get access to the machine). You could create similar pockets using a router or a table saw. I guess it depends on how you will react if they start to come apart in a few years time.
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Dominos in 12mm thick probably not at best it would lead to the domino eventually printing through even with 4mm as there would only be 3mm on either side of the domino. Better to use biscuits, and cheaper if you don't possess a domino machine.
 
What Father J said. I built a big dining table in oak. Made biscuits, also in oak and put them in with the grain crossing the joint. Cavities cut with routing bit.
 
The benefits of biscuits and dominos is that you use the face of the wood as a register for the biscuit or domino so the boards end up flush or as near to as takes little sanding to achieve the appearance of a flat flush joint. There is a method that I can think of that uses neither biscuit or domino, it uses a screw actually several and a mortice to take the shank of the screw with a hole at the end big enough for the screw head the boards are brought together with the screw heads protruding by a third of their length going into the holes, one board is then tapped at the end such that the screw travels in the mortice with the head biting into the sides. You need to be very accurate to make it work to produce a flush face. As you are bedding them onto another surface you could get away with just glueing the edges though.
Wen edge joining boards and especially thin ones be careful not to use to much pressure or you will end up with a cupped board.
 
This is what you have to do if you use crappy boards that aren't flat in the first place.



It persuaded me that it was time to buy a thicknesser
 
DownWest said:
No biscuit jointer, but I do have a kit for the router that does single or double. In this case, I wanted something a bit stronger, hence the oak biscuits. They were a bit longer than standard.
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Slightly thicker than 12mm but using offset 12 mm dominoes 😁

 
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