The lightest method and the easiest, to great qualities! That would be Z-Poxy thinned about 40 percent with denatured alcohol. With this method there is absolutely no excess resin, you don’t have to scrape anything off, so you don’t get resin all over yourself and your shop.

To fill the weave of the cloth the biggest mistake you can do is fill it with another coat of epoxy, not only is this extremely heavy, it is also a lot of work to sand it off. I mix acetone with auto body spot putty to a consistency just a little thicker than milk. Brush this on to fill the weave, it is very light weight, it sands off extremely easy and you can sand it down to the level of the cloth (most is sanded off) and it fills the weave perfectly.

Next add your favorite primer and sand most of that off and you’re done. The point is, the putty and primer sand very easily so it is easy to go down to the cloth without harming it. Trying to sand resin off is labor intensive and you are always in danger of sanding too much off.