Sanding grit before sealer.

S

strum456

Oldtimer
I've always heard 400 for solid colors and 600 for metallic. With solid black, am I doing a better job if I sand to 600 vs 320 dry? What grit should I use if I have to sand trash out of my sealer?
 
Out of your sealer, most will tell you to use 600.. You could use 400 for solids, and 600 for metallics and pearls, but 600 is always safe bets for anyone..

I leave my last coat of 2k in 320 or epoxy which ever Im using, then I use the old 1:1:1 epoxy as my sealer and spray base 30 minutes later.. Generally its soo thin that trash isnt an issue.. When I have had some issue with trash in that thin of a coat, I would use a grey scuff pad, and base right over it.. However, I have had a time or 2 where a silver came back and bit me in the butt using the grey scuff pad, so I always recommend the 600..

There are allot of instances where you can use certain things at certain times, but not always and not all colors etc.. So just stick with the 600

Happy Spraying
 
Thanks BK.

Just want to make sure I understand. Sanding my primer to 320 will be fine before sealer. It is the rare case when sealer needs sanding before base that I should use 600?
 
I like sanding to 600 before epoxy sealer and paint, I have seen sandscratches show on fine metalics using 320 dry or 400 wet-on solid colors they'll never show. A grey scotchbrite is equal to 800 grit. BK-if you seen scratches showing in silver after using a grey scotchbrite the sealer mist have been fairly fresh making for deeper scratches. Solid black-final sand with 400 or 320 and shoot your sealer-you won't gain anything by going to 600 grit before sealer. JMO's
 
Thanks guys. If I have to sand my sealer in spots I'll probably use 600 wet. I'll just take the primer to 320 then.
 
So for solid colors you guys are you guys finish sand with 320 and then seal?

I've painted black on top of 320 scratches that never showed but it made me nervous, lol

Now I always seem to hit the parts with p500 with in interface pad on my sander.
 
orangejuiced86;8931 said:
So for solid colors you guys are you guys finish sand with 320 and then seal?

YES

Now I always seem to hit the parts with p500 with in interface pad on my sander.
Click to expand...

Nothing wrong with that at all either.. Peace of mind is worth everything when you have spent all the hours we do on cars
 
Man I am confused on the sealer. Some say at that reduction there is no induction time needed, some say a long time. I think ill just let it sit for 2 hours, lol. Just to be safe.
 
I just read your post, OJ. I think the tech sheet says 20-30 min induction is required for reduced epoxy. If not reduced, induction is not needed, but recommended. 2 hours would be even better in my mind. I've already inducted it for days. Just mix before spraying.
 
I think I induced it about an hour or so. But yes, as a sealer it sprayed nice rediced like that.

The last complete I did a few months back, I only reduced it 20% and I got a little texture which in turn effected the way some of the metallics layed. Now I am a happy camper!
 
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