ever heard of ospho? chemical yun that you apply on rusted parts, converts the rust to sulphur oxide (very hard anti-rust chemical) and stops rust from spreading. no need to scrape to metal, just apply it on rusted parts, wait till it turns black then paint. may darating kami na 3 drums this week, maguwi nga ako ng kahit 1 liter lang hehehehe!

may ospho pens na tinda sa diy, not sure lang if its handyman or sa galeria. felt tip pen kulay yellow yung plastic nya. just remove the rusted surface, apply pen and wait till it turns black. then paint.