What causes runs in clear coat?
COMMON CAUSES Excessive film thickness: Too much material in full wet coats leads to excess paint that runs. Insufficient flash time: Not allowing enough time for solvent to flash off of the first coat before applying next coat can also cause runs.
How do I fix my paint run before clear coat?
Allow the base to dry enough to sand then block sand the run using wet sandpaper on a small block. I use the Run Blocker shown below but on base coat you can get away with less sophistacted blocks. After leveling the run you will re-apply the base then apply clear.
Can you sand out paint runs?
Use the fine grit sandpaper to sand down the paint runs. If the paint runs are large, consider using loose grit sandpaper instead. Loose grit sandpaper is designed for tougher jobs. Continue to sand the paint runs until the area is smooth and level.
How do you fix solvent pops?
Prevention
- Ensure that the surface is scrupulously clean.
- Use only recommended thinner.
- Apply paint in thin, wet films.
- Use correct compressed air pressure.
- Allow sufficient flash off time before force drying, ensure that the correct drying temperature is not exceeded.
What’s the best way to fix a clear coat run?
Wet sanding makes clean up a ton easier and allows you to sand without all the dust while still getting a glass smooth finish. Depending on how bad the run is, this is what is going to determine what “grit” of sandpaper we use to fix this clear coat run.
What happens if you sand through clear coat?
Anywhere you see a glossy shine to it means the surface is still uneven, if you sand through the clear coat this is where a touch up will be needed. However if you managed to sand it out and the whole panel looks dull and even, you managed to eliminate the run, but now we have to clean up our scratches.
What kind of sand paper to use for clear coat runs?
Wet sanding makes clean up a ton easier and allows you to sand without all the dust while still getting a glass smooth finish. Depending on how bad the run is, this is what is going to determine what “grit” of sandpaper we use to fix this clear coat run. This one is pretty bad so we would start with a 1000 grit wet sand paper.
What happens when you burn your clear coat?
Burning your clear coat means you held the buffer on there for too long and the top layer of your clear coat during the repair and it removes too much clear or leaves dull marks etc… A dual action polisher works way more efficiently and makes it a lot safer. It’s constantly moving and most the pads are vented.
