Board Builders

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Premium Member Comment by Deeks63 on January 9, 2012 at 17:45

Hey Darcy - the Selleys stuff is good and provides a very solid bond when you're in the early days of board making.  I've run up about 6 or 7 decks using it with no de-lam issues.  Having said that it's not completely waterproof, but dont let that worry you too much. Down here south of the border, the Bunnings marine-grade ply aint generally hoop pine (but Mitre10's is) but it comes in many species.  All are good - things to watch for with Hoop Pine is it's soft - good for bending, bad for running into stuff that is hard (gutter, etc) so overcome that somewhat with a good epoxy.  Don't go for the Diggers brand from Bunnings - it's a polyester epoxy and not great for end-strangth on your deck - some real epoxy like the West Systems 105 is significantly better and cost about the same (and even less in larger quantities).  Did you think about any reinforcement (glass)?  will help with the stiffness as well. 

Comment by Darcy Sanders on January 9, 2012 at 15:21

I am intending to have a WB of about 29 inches and somewhere between a 1/2 to 3/4 inches of concave if that helps. The glue will most likely be Selleys Aquadhere Tradesman's Choice. I have read that it is cheap and available at Bunnings and works well. The wood I'm not so sure as it depends what the local timber place has. Thanks for responding so quickly to my question before.

Premium Member Comment by Steve on January 9, 2012 at 14:58

3 layers of 4mm or 4 layers of 3mm should be fine. Having said that other factors also affect stiffness like amount of concave, WB length, glue used and type of wood used.....

Comment by Darcy Sanders on January 9, 2012 at 14:48

Hi all.. just finished reading this thread. I am planning to make a topmount speedboard using a dimm press. I'm sourcing some foam off a friend.

My plan so far is to use hoop pine or marine ply in either 3mm or 4mm. Whichever one I can find for the cheapest price basically. For a glue I am planning to use a cross-linking PVA.  The middle board by Alexander on page 7 is the sort of thing I'm aiming for. It will be approximately 38x10 inches. My question is how many layers will I need to make to board to ensure a super stiff ride for someone who is about 80kg. 

Comment by Alexander on January 5, 2012 at 12:10

have just begun construction of a 3rd board-a rad mini cruiser pics on completion

Comment by Alexander on January 4, 2012 at 22:11

m board are double coated fibre glass with small amount of camber these boards are solid as fuck

Comment by harold jackson on January 4, 2012 at 21:56

Laminate is what I build with.  Add saw cuts and resin and it becomes stronger than just plain laminate and a curving makes it even stronger. 

Comment by Alexander on January 4, 2012 at 21:35

even so a on peice board is not structuarly sound a board made of several layered sheets of wood is always going to be stronger than a single peice of plywood. my two board that i made with several layers of hoop pine a super strong and have a 22mm concave

Comment by harold jackson on January 4, 2012 at 21:18

but even with a smaller board its still possible to do a big bend, but a 30mm curve tends to cause splitting.

Comment by harold jackson on January 4, 2012 at 21:14

Nah u did it wrong, I bent 14mm and put a 25mm concave into it. the board is 1200 long and 305 wide

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