I was also very much worried about it. I did two things to ensure that I don't have too many problems. I used Joe's external strongback to build the kayak. I had about two month inbetween glassing the outside of the hull and the inside. When I made up my forms, I made also a hole for an internal strong back. I assembled the internal strongback after seperating the hull and deck. From that time on I always put the internal strongback inside the boat and taped the joint tight after every time I was working on it. The maximum deformation was within 1/4" about two feet from the stern. It was not too difficult to align the hull and deck when I finally taped the seam.

Alternatively, you should tape at least the hull and deck together every time when you are done for the day.

Not everyone has the time to strip and glassing the deck within one week after glassing the hull.

I only heard of problems when people left the hull and deck seperated for long periods at a time.

Andreas

: Following the thread with definite interest--I've been lurking and ordering
: stuff to build a Spring Run, and my greatest concern is how to avoid this!
: I seem to recall a thread on this a couple of months back; it seemed that
: the key is moisture content in the wood, and warpage that happens when one
: side of the wood is glassed and the other isn't. Someone (was it Rob
: Macks?) mentioned rewetting the wood when this kind of curling happens;
: I'd be most interested in what the collective wisdom is on how to deal
: with the problem, and especially how to minimize/avoid it.

: I do, at least, have the luxury of a basement with pretty constant conditions
: as a worksite. Is there value in sequencing one's work to get the glass on
: the insides as soon as possible after doing the outsides? It occurs to me
: that one might
: -get the hull stripped
: -mask the sheer strake
: -get the deck stripped and ready for glass
: -then use the masking to protect the hull while glassing the outside of the
: deck
: -then remove the deck and glass its inside
: -then do the hull outside followed by inside. Any comments from you pros
: about how to sequence the work for best results? How important is it to
: avoid a long delay between exterior and interior glass application?

: Craig