When restoring a classic car, rust prevention on the body work and panels is very important. Rust prevention on new body panels starts with rust protection before welding. The only drawbacks of welding on rust protected body panels is the fact that the rust protectant primer will burn off, and welding on a surface protected by anti-corrosion primer produces uneven and weaker welds than welding on a clean steel surface does. Unless a special type of primer is used. To avoid weak, uneven welds and bad starting of the torch the application of a special weldable or weld-through primer is necessary. Rustbuster Weld-thru primer is such a primer.
Rustbuster Weld thru primer will protect the body work metal while welding it together. Only the weld spot itself will not be covered with primer after welding. The primer is heat resistant and will remain on the direct surroundings of the welded spot. Rustbuster weld-through primer is a fine basis for any epoxy primer and rest of a paint system.
Rustbuster Weld-thru primer can also be used as a first primer layer to rustproof body panels, with Rustbuster Custom Epoxy 421 as a good follow up to form the basis of the paint system to be used on the classic car.