Rustins button polish 300500ml rustins butp300 this 300ml bottle of button polish from rustins is suitable for french polishing wood where a more orange or golden tone is required and suitable for sealing wood before waxing when applied correctly the polish will produce a high gloss finish alcohol evaporates rapidly leaving a film of shellac on the surface of the timber for french polishing apply as many coats as required to build a sufficient layer of shellac for sealing wood before wa