Flash time between coats with metallic

General Discussion. Make yourself at home...read, ask and answer!

Posts: 5
Joined: Thu Sep 14, 2023 12:34 pm

PostPosted: Thu Sep 14, 2023 1:09 pm
Hey guys! New guy here, hoping you can help as I'm trying to do this today :)

I got a fiberglass hood that I already primered last week with 2K Urethane Gray Primer, just got done wetsanding it with 400 Grit.

I'm using a Metallic Red basecoat (ready to spray Urethane) and then a Urethane clear with medium reducer, 4:1 mix - all at around 75F in my garage.

The big question is :

1. How long do I wait between the basecoats (applying 2 or 3 coats)
2. How long do I wait before going to the clear coat and then between the clear coats?


User avatar

Top Contributor
Posts: 2591
Joined: Sun Dec 16, 2012 4:46 am
Location: Canberra
PostPosted: Thu Sep 14, 2023 8:18 pm
If you've sanded with P400 wet you will be able to see sanding scratches in the basecoat. Keep sanding to P800 wet to get the best finish ready for base.

Flash times will depend on temperature, humidity and how thick each coat is. At 20-25C a flash time of 10 minutes is fine with a medium wet coat. Probably better to allow extra, say 20 minutes and then at least double that before clear.

Base coat should appear evenly flat (i.e. not shiny) before recoating but this assumes light to medium coats. If you put on heavier coats then it may take much longer since the top will flash off but the paint will still be wet underneath.

Your Tech Data Sheet(s) will have information specific to the paint(s) you're using.

Posts: 5
Joined: Thu Sep 14, 2023 12:34 pm

PostPosted: Sun Sep 17, 2023 3:45 am
Thanks, it came out great :)

Return to Body and Paint

Who is online

Users browsing this forum: Google [Bot] and 56 guests