Phil Kriley Posted May 19, 2008 Share Posted May 19, 2008 I just did the lower skin on my canard yesterday, and have a question that I hope someone can help me with. We did the layup, all llooked nice a smooth, we put on the 2 inch peel-ply on the leading edge, built a little heat tent around the work and then went bowling. A couple hours later we checked the curing glass (about 80 degrees in the tent) and found two large bubbles had developed. One was about 18 inches in from the end, was about 4 inches long, 1 3/8 wide and 3/16 high, oblong in shape. The other was on the opposite end, approx. the same area, but a little smaller in size. Bother were over the foam behind the spar cap. Since the glass was still curing, I stipled the two bubble down and worked the air out as best as I could and put the tent back in place. A couple hours later I checked on it aagin and the two bubbles had reappeared, although not as big. So again I stippled them down, but this time I also put on peel ply, covered with freezer paper and weighted with shot bags. Looked OK this morning, except that it's not as "pretty" as I would have liked being that there is a "patch" of peel-plied skin at each end. Any thoughts as to why this happened, and what I could do differently when I do the top skin? Should I let it cure at a lower temperature and then post-cure in the heat tent? Quote Phil Kriley Cozy #1460 Chapter 13 - nose Right wing done - working on right winglet. Link to comment Share on other sites More sharing options...
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