Originally Posted by islandman
So I have a question, how best to fill these areas and what to fill them with? Gel coat and sand it back? For some of them I was thinking of just using candle wax as this is probably a one time mold? Thoughts or ideas anyone
Another question, do you guys always put tissue down as your first layer on the gel coat? If so is this to make it easier to confirm to tighter angles and ensure no air voids before laying the thicker glass fibre. I had thought about trying this but wasn't sure doing it on my newly made mold was the best time to experiment. but having said that I do have some narrow deep recesses that may benefit from this approach if it works?
Brett and Roger, what do you guys think about my two question?
Since this is a one time thing and durability is not an issue if candle wax will work then use that. There are other ways to fix the problems but the candle wax would be the easiest and cheapest, I've used mold release wax to fill in small voids also.
I've heard a few stories about the use of tissue or as it's called here deck cloth.
First is that its put down on the gel coat so the next layers of glass don't bleed through, and the second story is its used if gel coat is omitted.
To fill in areas that you can't lay the glass in I've used a mixture of glass beads and resin and mix that into a paste that or mix up some glass fibers and pack that in. I then fill the area in to a point where laying the glass will conform to the curves.
Also if your having trouble getting the glass mat to lay flat on tight curves, pealing it apart to get a thinner section of glass works. Of course buying a lighter fiberglass works also. Once its built up to a point where you can lay a heavier glass over it you can start with that.
I'm assuming during all this glass work your using laminating resin and not finishing resin.
The difference is finishing resin has wax in it and laminating resin doesn't.
Use only laminating resin or you risk the chance of the layers of glass coming apart.
The wax acts as a sealer. If you where to use a finishing resin while your where laying up the glass you would have to sand the glass between layers to remove the wax.
If I forgot something let me know