Question about sanding

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Mopar70Dart

Mopar Kid
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When you guys sand what do you usually start with then go to on from there?
Possinly 320 400 then 600? then wetsand with 1000? Just curious
 
Where is your "from here at" ?
Are you in primer or old painted surface?
I give it a real good bath that will remove wax and sap exetra.
It will save your sand paper from plugging up.
and will keep you from moving it around on the surface.
 
Depends on what your sanding. For body, I will start with 180, move to 220, then move to 320. I'll prime, then add a gy-coat(sp). when sanding primer I'll use a 320 with the gy-coat (dry) applied. When I wet sand I'll use a 400-600 grit and go from there. But again, depending what your working on.
 
I dry sand the primer up to 320, then wet sand it with 600 before top coating. 1000 is too fine for a top coat, you risk adhesion problems.
 
If you're removing the old paint, throw an 80 grit disk on a DA sander and have at it. Lock the DA in for just turn, not random, it'll go a lot faster.
If you're already have your parts in bare metal, shoot a couple of coats of epoxy primer, then the high build primer of your choice on top of that.

Now, when you start sanding on your high build, start with a long board and 180 grit sandpaper. Sand in an X pattern, and don't push on the sanding block, let the sandpaper do the work. This is probably the most inportant step in getting those panels straight and flat. Use a contrasting color of lightly misted lacquer or urethane as a guide coat. Keep adding high build primer and guide coat until you have no high or low spots, then do as Rob said, and go to about a 320 or 400 grit. I don't personally wet sand, and I always use a sealer coat just before I spray my paint, so I usually just quit at 400 grit.
 
Sorry Mike I started from an original paint color that was redone with all the clear still on it and used 320. I have used some 400 and the surface is extremely smooth. Im thinking about doing 600 next but not sure.
 
Do What Oldvart Said. This Is The Only Way To Do It. My Brother And Dad Has About 70 Years Between Them In This Business, They Know What There Doing. Keep Adding That Scratch Coat Till The Blocking Is Done. 400 In The End Is As Far As You Should Go. Don't Forget The Paint Needs To Be Able To Bite On To Somthing. To Smoth Is No Good Till Your Paint Is On. Then Do A Sand And Buff.
 
yep !! we got some of the best here. This thread should get you on your way.

I only put water on the floor just to dampen so you don't kick up some dust when you start painting color and clear.
Not unless you have a dust free floor.
 
Mike: You'll have to see my new booth i built over the winter. Hope to see you at Jonesboro show the last of this month at the Convocation center. This will be the grandsons first car show. He's about 8 months and the wife said she's gona take a picture of him with every Mopar there. His dad is a Ford man. We're gona change that if i have to give him one. See ya at the show Mike. The club is coming down also. Gonna do fish at the place south of your house so come and join us after the show.
 
If you are sanding clear coat, be sure that you don't have any "shiny" spots when you get done. If you do, it is a low spot that needs more sanding. Also, will you be painting it? Since you are painting over paint, be careful that you don't apply too much - that could lead to your paint cracking over time.
C
 
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