SPI Basecoat over SPI Epoxy

T

tekuhn

Hi there,

I sprayed 2 medium wet coats of SPI grey epoxy primer today over a raw aluminum amplifier chassis that I first DA'd with 80-grit and cleaned with 700-1. It was my first time using any SPI products. My experience level is quite low - hobbyist. I am pleased with the way the epoxy looks. I didn't expect it to be shiny, but it is and flowed out nicely. I have no need to follow this with any 2K and want to go straight to basecoat next if permissible. I do not have a booth and do my spraying outside. There is a small amount of trash and orangepeel that I would like to remove prior to base. What grit should I sand the epoxy with prior to applying the base? How long should I wait before sanding the epoxy? After base, I will using SPI Universal Clear. Thank you in advance for your responses!

Tom
 
I'd sand epoxy with 1500 wet, like you would base.
Can be done today if you want.
 
Since I paint outside, I’m expecting a small amount of trash. Is it ok to wet sand the SPI pure white base coat before I clear, and if so, how long should I wait after spraying 3 coats?
 
Wait 30 to 60 mins to 1500 and as long as you still have hiding safe to clear
 
Thank you very much. I wet sanded the epoxy a few minutes ago and it did great. It just very gently knocked down the highs and now I hope to base today if it doesn't rain.
 
Got a couple of runs and one fisheye to deal with, but overall pretty happy with the base. It's no reflection on the product, of course, just typical rookie mistakes. I decided to paint this amp chassis for the practice expecting a less than perfect result. After this, I plan to paint a trunk deck lid.
 
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