How Long To Wait To Paint After Sanding
The hardener allows the paint to dry faster and more crisply so sanding will be more effective earlier on in the process.
How long to wait to paint after sanding. But unless youre working with the chemical-hardening stuff that has a much shorter curing window of 20 45 or 90 minutes you need to wait 24 hours before applying a second coat. DRY RECOAT Dries to touch in 20 minutes and is fully dry in 1 hour. However this period entirely depends on the type of primer application method and the surrounding temperature and humidity levels.
After some time with the 400 grit you can move to a 600-grit paper to give yourself a nice smooth surface to work with when you are painting the car. If you find the answer to the question do you wet sand before clear coat then you should know you have to start wet sanding after clear coat. If anything is more important it is to clean the surface thoroughly after sanding as the process accumulates a lot of dust.
You can sand the paint after its dried long enough to be re-coated. If the item is two sided let the first side dry to the touch then flip and paint. Likewise how long does it take for auto primer to dry.
However if you are wet sanding then you need to make sure youve waited long enough for the finish to completely cure. Before wet sanding and buffing clear coat allow the clear coat to settle for at least one day at room temperature. Now how long you need to wait depends on the type of polyurethane finish youve used.
Some guys recommend waiting up to a week before final sanding due to shrinkage issues with the 2k build primers. Urethane coats that progress in stages do not generally use this type of hardener since the layers naturally build on top of one another but single stage brands. After you pour the second coat of epoxy it will look good as new.
If the temps are optimal between 65- 85 degrees you can re-coat about every 5 minutes as long as you are applying light even coats. After priming you will have to wait for at least 1-24 hours. You dont want to rush the process of color sanding.
