Replies

1. 
   Sgian_Dubh | Sep 01, 1999 04:41am | #1

   *
   I'm guessing a bit here, but I'd say that,

   1. Epoxy is not too fond of shocks.

   2. Polyurethane is foam, and I don't know how it stands up to shock, but it doesn't suffer from creep.

   3. Urea Formaldehyde -white powder mixed with water- has been used by boatbuilders for yonks, doesn't suffer from creep, unlike PVA, and is also waterproof'ish, and will accomodate at least some shock. The boatbuilders seem to like it, and there must be some reason.

   I think, speaking only as a furniture maker, I'd go for the last named, whatever you cover the surfboard with. (I couldn't say I'm right, but this is my intuitive guess.)

   As far as shock in general is concerned, have you considered ash as a material? It's tradionally used for wheel spokes, hammer, froe, and axe shafts, etc., and there is a very good reason for that.

1. 
   Tom_Robb | Feb 28, 2000 07:53pm | #2

   *Epoxy will work fine as will Weldwood (unless you intend to ski in boiling water) Weldwood doesn't pass the boiling test. There are a lot of epoxy glued boats out there. Most haven't fallen apart yet.

1. 
   Fred_Matthews | Feb 29, 2000 07:14am | #3

   *I would agree with Sgian....also...is Weldwood just another brand name for urea -formaldahyde or is it a different formulation altogether?

1. 
   Sgian_Dubh | Feb 29, 2000 11:10am | #4

   *Weldwood is urea formaldehyde. I noticed when I came to use Weldwood recently, it was brown and leaves a dark line. I hadn't used urea formaldehyde for a few years because I don't build much stuff for outdoor use, and I was a little surprised at the colour. I'm used to an European formulation supplied by a firm called Borden which is a white powder. Still it seems to work essentially the same, but the dark glue line might be objectionable with pale timbers.

1. 
   Jim_O'Donnell | Mar 01, 2000 05:05am | #5

   *I would use urea formaldehyde, myself. It's waterproof, rigid and will withstand the beating. Unibond 800 is also a brand name of urea formaldehyde that you may want to consider. It is available from Vacuum Pressing Systems, Inc. I also should mention that the idea of using ash sounds like a pretty good idea to me too.Jim