Ross77 wrote:
Going to try to make another this summer. But I have a question....how have you guys put a concave in the board as well as rockker? I cant work out a way of doing this without shaping a mould and pulling down onto this with the vacuum bag...and that sounds like a long job!
I thought I explained it in my previous post.
You just staple a strip of wood to the centerline of your rocker table.
Then put the layup in the vacuum bag on top of the table
Then clamp the rail edges of the bag/layup to the edges of the vacuum table.
To do this I usually used 3-4 bar clamps on each rail, along with a batten (another strip of wood) to even out the clamping pressure along the whole edge of the board.
The table has to be somewhat strong to do this. Also the width of the table has to be close to the width of the board.
Try it with out glue first to see where you need to put the clamps and how tight to make them. If the clamps are too tight it can distort the shape.
This method is also what I used to build the moulds for my foam-core boards.
It works better if you laminate the rocker and concave before you cut the outline of the board. If you want to cut the outline first, then you can always just make mould first and then put the mould in the bag with the final laminate.
Trent