Hi all, i have just made my 1st tool using woven glass. The tool has come out with lots of voids in it and its almost too poor to fill and sand. I bought easy composites epoxy tooling gelcoat. After applying the gelcoat i used an LY epoxy resin and woven glass. I really arent sure why its come out as bad as it has. I sanded my part down with wet and dry to start with then applied several layers of meguiars wax whilst also rubbing off. I then applied a coat of easy composites pva release. Then i applied the tooling gel coat with a brush........ i just let the gel coat get to a tack before applying my epoxy resin and woven glass. Should i have applied the gel coat and let it go hard before doing anything else or should i have also applied some chop strand mat after i applied the tooling gel coat and then let the whole thing go hard? Thanks in advance

Using woven glass is a perfectly fine and acceptable way to make molds.
Unfortunately wet layup isn't as easy as it sounds, there are many things that can go wrong. Your description is insufficient to pinpoint the specific problems, a few pictures might indeed help. I can only assume what went wrong, probably the mistakes that most beginners make.