600 grit wet sanding?

MKH

Promoted Users
Thanks to all the valuable help of this forum I have made it to the stage of 600 grit wet sanding. The photo shows where I have broken thru the SPI 2k down to the SPI epoxy while 600 grit wet sanding. All of my panels have a few small spots like these. How do y’all tackle this? I do plan to use a reduced coat of epoxy just before base coat if that makes any difference.
Mike
 

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I had been chasing these with 1 coat of 2k over the spots. Then wet sanding with 600 grit. But chasing these is getting strung out and I usually have to sand the entire panel because of the overspray and sometimes get new spots showing thru. So a reduced coat of epoxy just before base coat is the correct way to go? Thanks
Mike
 
I had been chasing these with 1 coat of 2k over the spots. Then wet sanding with 600 grit. But chasing these is getting strung out and I usually have to sand the entire panel because of the overspray and sometimes get new spots showing thru. So a reduced coat of epoxy just before base coat is the correct way to go? Thanks
Mike

Sealer will take care of the small sand throughs before applying base. I had this exact same question a month or so ago.
 
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