H
H.O.Motorsports
What grit to do a reclear on universal clear? I will be two toning over the clear coat first...Wait time before sanding and how long before i have to redcoat...
E
ExcellencePaint
a little confused by what you're asking but Ill give it a shot. These are just what I do, Im sure others are different.
If you're going to sand and reclear universal. I don't personally ever go below 800. When doing our projects and going in for the 2nd round flowcoat of 3 more coats of u.v or euro, well block it down with 800 or 1200 and than clear it.
If you've already sprayed universal and looking to prep if for 2 tone, minimum 24 hours at 70 degrees, depending on how long you waited before clearing over your original base you might want to wait longer. Also with what color you're putting on top of the uv, you might want to wait longer to spray on top of it to avoid shrinkage or any solvent interaction that might cause a problem.
how long before you have to recoat, if you will be sanding it down and at that point you go about your normal prep process. If you're asking how long before you can clear over your base/ whatever clear didnt get color on it, that you'll have to look at your manufacturer of base tech sheet. With most spi stuff if it has sat for more than 12 hours after original prep process its always a good idea to hit it real quick with a scuff pad just to be safe.
If you're going to sand and reclear universal. I don't personally ever go below 800. When doing our projects and going in for the 2nd round flowcoat of 3 more coats of u.v or euro, well block it down with 800 or 1200 and than clear it.
If you've already sprayed universal and looking to prep if for 2 tone, minimum 24 hours at 70 degrees, depending on how long you waited before clearing over your original base you might want to wait longer. Also with what color you're putting on top of the uv, you might want to wait longer to spray on top of it to avoid shrinkage or any solvent interaction that might cause a problem.
how long before you have to recoat, if you will be sanding it down and at that point you go about your normal prep process. If you're asking how long before you can clear over your base/ whatever clear didnt get color on it, that you'll have to look at your manufacturer of base tech sheet. With most spi stuff if it has sat for more than 12 hours after original prep process its always a good idea to hit it real quick with a scuff pad just to be safe.
Jim C
Oldtimer
usually i will do a 400 or 600 grit finish on the sanded clear. i never go finer than that. the coarser you go the flatter you will get the clear. 800 is enough of a tooth to allow adhesion of the next clear session. 1200 is a bit too fine unless the clear is rather fresh, say 24 hrs max. ive seen both clear and base peel off a 1000 grit scuffing of fully cured clear. 800-1200 wont cut down any urethane wave though either. orange peel only. i think many years ago barry had done a test with some type of gloss meter and found the best gloss to be achieved when clearing over 320. thats a bit coarse for me.
H
H.O.Motorsports
I used Deltron DBU base (Catalyzed) and 3 coats of SPI universal clear..I am blocking the car with 600 wet going to shoot the 2nd color of base and reclear the roof and both quarters...The main question is how long after i block the clear with the 600 do i have to start shooting my base/clear...the panels have a lot of curves and it`s going to take several days to get the sanding and prepping done...will this be a problem????