Quote:
Originally Posted by abl1111
Hmm. Not exactly sure what you;re describing. Are you saying to use the topside as a mold - a female plug ?
Once solid, add wax/ mold release on inside of that female plug, glass in core material, then pop that out, cut and use cored pieces as needed ?
|
Not a plug, per se, but a curved surface. If we assume that the core in the cap is a constant thickness, then if you were to wax/pva or just polyethylene sheet the cap, then you could lay down a layer of mat or even 1708 and a layer of core and a layer of mat, or even 1708 on top.
That way you make a sandwich core that conforms to the curvature of the underside of the cap. But you lay it up right side up.
The bottom layer of mat/ 1708 would be the underside of the core. Once that all kicks you could flip it over, cut a 45 degree bevel around the edge and put more glass over the bevel. Then you have something like the inverted trapezoid I made for a "hat channel" stiffener for my deck, except it should follow the underside of your existing cap nicely. Of course you want it to be less than full cap width. Then you sandblast the underside of your cap, wash with acetone and bond the additional core in place like an oreo. Or grilled cheese sandwich. I'd use VE or an epoxy thickened with some cabosil and structural thickener. You will need a bunch of C or bar clamps or welding clamps.
I hope this makes sense. I haven't tired this, but it is a variation on the deck support I made.