The primer shouldn't have any you can use a moisture meter to detect it.
https://www.amazon.com/Digital-Mois...&hvtargid=pla-1636494276148&th=1

If you have moisture in the filler, grind it off and start over. Seal your filler soon after it's set up to prevent moisture.

Last edited by Wayne67vert; 04/12/2023 12:26 AM.

Wayne
1938 1-Ton Farm Truck
Stovebolt Gallery Forums
1989 Silverado
1996 Mustang GT convertible
When I die, I hope she doesn't sell everything for what I told her I paid for it!