Bondo man, I have used it so many times on everything, it sands, paints, it is hard, it will do whatever. It is made to take clear coat and any type of paint. Follow the mixing instructions use the plastic scraper to smear it in and "fill" the hole, then you quickly clean the bondo from your scraper, and scrape it flat over your fill clearing off all the excess and leaving the hole you filled flush, then quickly wipe any haze around that with alchohol on a rag. Also check you tube searching "bondo on wood" and watch a few videos keeping in mind the technique I told you. Here is a great vid.