Anti-rust primer before fibreglass/filler?

[walty666]

Hiya,
Just been working on removing some rear wheel arch rust. Got rid of most and treated with Jenolite but now need to patch up some holes with fibreglass and filler over. I want to treat the area with anti-rust primer. Should I spray the bare metal with a coat or two of anti-rust primer before applying the fibreglass and/or filler or will this affect the bond? Am I better off applying the fibre/glass and/or filler directly to the metal?
Cheers
Ross

 

[Peter Pick-Up]

www.fertan.co.uk

 

[Sei_rory]

rust is like cancer, you cant cure it you simply prolong it from coming through the surface. the only and proper way to remove it is to cut it out and put fresh metal in!