Charles,

I'm not sure what you mean by telegraphing, so I will take a guess. First of all, it sounds like you had a humidity change in your shop causing the wood to swell on the non-coated side, which would make it want to pull away from the forms. Now, about your question. Consider that epoxy shrinks as it cures. If you had small gaps between strips that was mostly filled by resin, the resin will tend to "dimple" in that area later because the resin is thicker there. Also, by pulling in more curve with straps, any gaps on the top side would tend to increase. If this is the case, more fill will fix the problem. I don't see how glassing the inside is going to correct this.

There are a couple other things down the road to think about. When you glass the inside of the deck, you should make sure to pull in the proper amount of curve so that when the resin sets up, the deck will match up with the hull. This will also help if you are going to make hatches. If you don't do this, the hatch areas will be under tension and will flatten out when you cut them free from the deck. Then you will have a very hard time keeping them from leaking because the curve of the deck will be different than the curve of the hatch.

Hope this helps,
Ted

: Hey Folks,

: I've got a question(s).

: But first, heres the situation. In the walnut design on the deck of the
: "L" that I'm working on, I am getting some telegraphing of the
: joints between the walnut strips. I've got 2 layers of 4oz E glass on the
: outside and 2 fill coats of epoxy. Nothing has been done to the underneath
: side yet. When I applied the glass and fills, the sides of the deck had
: pulled away from the forms abt 1/2" on both sides. The glass/epoxy on
: the outside had been curing for three days, so yesterday I used some
: ratchet straps and pulled the deck back down snug to the forms. Some of
: the "telegraphing" was showing before I pulled it back down to
: the forms, but, now there seems to be more of it.

: My question is: Is this going to be a problem or will it all be taken care of
: when I apply the double layer of 4oz E glass under the deck?

: Also, I was planning on sanding, then applying another fill coat or two on
: the outside anyway after the underside is glassed. This should take care
: of any cosmetic flaws on the outside, IF glassing the underside solves the
: problem.

: You can't see the "telegraphing" in the pic. I just included it so
: you can see where the walnut is.

: Any, and all, help will be greatly appreciated.

: Happy Building.

: Charles.