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tarquin1 said..
Someone asked about the type of files. I have used Shape3D and had blanks cut. I sent the DXF files. Dont know if this is always the case but I have had a few things CNC cut 2D and 3D. They always asked for DXF files.
I also have a question about trimming the airex stage. I am building a SUP, OK its not a windsurfer but a board build is a board build. I want to put airex on the bottom of the board and wrap it up around the rails. I see in the pic he has just put too wide a piece of airex and trimmed it back. Has he put tape or something so it doesnt stick or do you just sand it back.
What density foam is the blank and what pressure is he using when bagging. Is he using epoxy to glue the high density foam to the blank.
OK that was more than a question.
Do you have to use airex?
corecell is easier to form around rails
I'm not the expert, but here is my thread from last year that shows enough of the stages.
www.seabreeze.com.au/forums/Windsurfing/General/Not-another-board-build-thread---?page=1 You will need a rocker spine like you see in my thread, but as a SUP is so big and the blank so light it can still want to move and the width enables it to twist when bagging it. Thus I would fully shape the board (unlike my WS board where the top is unshaped when bottom is bagged on) then use carbon tape (wet out on table first) on the rails. Then when bagging the bottom on, the rails are stiffened and the rocker spine keeping it straight.
For a SUP, using a wet-out table will be essential to keep the weight down, stryo sucks resin
Oh yes and its epoxy of course
Edit: forgot the pressure. Usually about 14" HG (50kpa) but for a SUP I would drop that down to about 10" to be safe. I use 8" to bag wood onto a surfboard deck and it still draws resin thru the wood....... so its quite a bit.