Any experienced body filler guys out there ?
Small paint bubbles under the rocker usually means rust . Rust means its getting moisture. Fixing that with bondo is a waste of time. Bondo absorbs water if it isn't sealed on both the back side my metal and outside by paint. The first application coat on any repair when fixing rust should be water proof.
Over welded seams or cleaned out bubbles.
If I was doing a quick fix on rust bubbles and I wanted it to last for a little time withpout cutting out the area. I would wire wheel the bubbles real good. Then grind the area with 36 grit. Go to autozone and get JB weld quick set mix a little up and cover the area. It dries in 10 -15 min. Sand level with 80 grit then apply a tin coat of bondo. The quick set will prevent the bondo from absorbing moisture from the inside of the rocker. smooth out the bondo prime . sand and paint. Most of the time quick set is all you need. POR15 putty is the best instead of quick-set. Its pricey though. It seals and stops rust.
I use Chassis saver and pour it into back and forth into the rocker behind the rear door panel after taping the weep holes shut on the rocker seam. Pore it all in. Make a trough and then pull the tape let it flow back into the can for the other side . Those bubbles will be gone for many years. I do that on all my cars whether its rusted or not. Clean cars I fill the rocker and lower quarters with several gallons of black rustoleum Then drain them. Slosh it up over the wheel house. Then paint.
Your putty is drying to fast because your using to much hardener. One little tube per gallon. a spoon full takes a dot a little more then a match head. Mix it and spread it. once don't keep going over it. It hardens quick. Its better to do small coats then trying to do it all in one coat. And you have to be quick don't even sneeze. Below is a good way of preventing any future rust after repairs or just anytime before paint. You can also pour it in behind the kick panels in the front. I also drill holes behind the front fender into the rocker and spray it in with a wand then put a small plug in the hole
View attachment 1715564980
Small paint bubbles under the rocker usually means rust . Rust means its getting moisture. Fixing that with bondo is a waste of time. Bondo absorbs water if it isn't sealed on both the back side my metal and outside by paint. The first application coat on any repair when fixing rust should be water proof.
Over welded seams or cleaned out bubbles.
If I was doing a quick fix on rust bubbles and I wanted it to last for a little time withpout cutting out the area. I would wire wheel the bubbles real good. Then grind the area with 36 grit. Go to autozone and get JB weld quick set mix a little up and cover the area. It dries in 10 -15 min. Sand level with 80 grit then apply a tin coat of bondo. The quick set will prevent the bondo from absorbing moisture from the inside of the rocker. smooth out the bondo prime . sand and paint. Most of the time quick set is all you need. POR15 putty is the best instead of quick-set. Its pricey though. It seals and stops rust.
I use Chassis saver and pour it into back and forth into the rocker behind the rear door panel after taping the weep holes shut on the rocker seam. Pore it all in. Make a trough and then pull the tape let it flow back into the can for the other side . Those bubbles will be gone for many years. I do that on all my cars whether its rusted or not. Clean cars I fill the rocker and lower quarters with several gallons of black rustoleum Then drain them. Slosh it up over the wheel house. Then paint.
Your putty is drying to fast because your using to much hardener. One little tube per gallon. a spoon full takes a dot a little more then a match head. Mix it and spread it. once don't keep going over it. It hardens quick. Its better to do small coats then trying to do it all in one coat. And you have to be quick don't even sneeze. Below is a good way of preventing any future rust after repairs or just anytime before paint. You can also pour it in behind the kick panels in the front. I also drill holes behind the front fender into the rocker and spray it in with a wand then put a small plug in the hole
View attachment 1715564980