Bondo kept sagging on a vertical quarter panel for 2 days straight
I was fixing a 2012 Civic today, the quarter panel behind the driver door had a dent about the size of a dinner plate. First pass I laid the filler on too thick, left it for 20 minutes, came back and it was dripping like a melting candle. Took me 2 full days to figure out the trick was doing thin coats, like 1/8 inch max, and adding a touch more hardener when the shop temp drops below 60. Even then I had to use a heat lamp for the last coat to get it to set up before it slid. My foreman finally walked over and said "you're mixing it like pancake batter, add less filler next time." I sanded it down today and it finally holds its shape. Anyone else fight with vertical panels this bad or is it just me?