RE: getting cloth to lay around a corner?
Here's a recommendation for a source for all kinds of cloth, at reasonable prices. Thayercraft Inc. Their web site is thayercraft.com the owner is Steve Thayer, who is a modeler, and full scale pilot. I've been doing business with him for over 20 years, and ordered cloth by the bolt several times. That's usually between 120,and 130 yards, but he will sell it in smaller amounts. There are several terms to discribe the different cloth weaves, but for our model airplanes we usually want a cloth that will drape around contours. Crows foot weave has already been mentioned as a good choice. Here is another suggestion if you are having problems with the cloth laying down in the mold, if you are not already doing this, try say 4 layers of 4oz. per sq.yd. instead of 2 layers of 8oz. per sq.yd. The lighter weight cloth will conform better to curves. As already mentioned cutting the cloth on the bias (45 degree angle) is a big help, but may generate a lot of waisted cloth. Sometimes there is no other choice than to cut the cloth at a sharp cornor, and over lap the edges. Since we are giving away trade secrets, no I mean "TIPS", try this suggestion. Use the lightest closest weave for your first layer of cloth in the mold. Something like 2 to 4oz. per sq.yd. This will result in the least amount of cloth weave on the exterior of your finished part, and fewer and smaller pin holes. Some people brush in a "skim" coat in the mold first, and some use a "surface coat" which is the equivalent to a "gell coat" when using polyester resin, to reduce pin holes. The different finishes on the cloth help in the wetting out of the cloth with the resin. Some finishes are better with epoxy, and some are better with polyester. Volan seems to work well with both. Good luck, Greg