I have a wood model coated in epoxy over .75 oz glass cloth. I have kept the epoxy thin and have applied several coats to this point.
My problem is that I have sanded through the epoxy and glass in a couple of small areas. I know I have to fix this before paint or the sanded through spots will always show.
Do I use a bit of fiberglass cloth over the bare spot before adding more resin? I have one spot that I have tried to cover several times now and it seems to keep coming back.
I was told by someone long ago that the cloth was to determine the amount of resin left behind after scraping the excess off , so it would make sense that I might have removed too much material.
I thought I'd ask before spending too much more time on it. Internet searches all seem to be about furniture. I haven't found anything on epoxy coating balsa.
John