Sharing DIY experiences results in two way learning
While Tahir came to know about speaker techniques ... we learnt his technique for low cost layering ..
After applying the layers of fiberglass and resin, his boy mixed resin, hardener, cobalt, black paint and calcium powder to make a bitumen like thick liquid. It provides for perfect sealing and gives a smooth top layer
.... hahahaha ... he also shared the secret of washing the brush .. washing it with toluene