Painting a vehicle question

Tiny
ROYCAR71
  • MEMBER
  • 1998 GMC JIMMY
  • 4.6L
  • V6
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
My car needs additional coats of paint. Do sand or wet sand before each coat?
Monday, July 4th, 2016 AT 8:17 PM

21 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If you wet sand is best then wash off you can use 400 grit then if you are painting with two step you will need a respirator. You may not need to sand to put on clear coat unless you are waiting a couple of days between base and clear coat.
Was this
answer
helpful?
Yes
No
Tuesday, July 5th, 2016 AT 6:04 AM
Tiny
ROYCAR71
  • MEMBER
  • 354 POSTS
If additional coats are needed, do I continue to go up from 400 grit or use 400 grit everytime?
Was this
answer
helpful?
Yes
No
Tuesday, July 5th, 2016 AT 12:31 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
You can use 600 for an even better finish.
Was this
answer
helpful?
Yes
No
Friday, July 8th, 2016 AT 6:43 PM
Tiny
ROYCAR71
  • MEMBER
  • 354 POSTS
I have orange peel in my final coat without clear coat what can I do to get it smooth and glossy? Thanks.
Was this
answer
helpful?
Yes
No
Saturday, July 9th, 2016 AT 11:00 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
Looking good, wait until its completely dry then color sand it with 800 and then shoot the clear coat.
Was this
answer
helpful?
Yes
No
Monday, July 11th, 2016 AT 6:52 PM
Tiny
ROYCAR71
  • MEMBER
  • 354 POSTS
It still has some orange peel and I sanded through some areas of paint. I am going to shoot one more coat of paint than clear coat. My question is will a few coats of clear smooth out orange peel?
Was this
answer
helpful?
Yes
No
Thursday, July 21st, 2016 AT 11:33 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Most body shops don't sand between color and clear they sand after but I fyou must and want the peel out sand it then clear it then sand again. You may be putting the paint on to heavy causing the problem. You should really check with a body shop guy on this. As mechanics we fix cars not getting into much like specialty stuff like body repair. Especially now a days with the types of paint that are on the market
Was this
answer
helpful?
Yes
No
Friday, July 22nd, 2016 AT 6:42 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
The paint could be to dry as well, turn the paint up on the gun or the air down. Please give us a picture when finished. I would like to see it.

Best, Ken
Was this
answer
helpful?
Yes
No
Friday, July 22nd, 2016 AT 10:48 AM
Tiny
ROYCAR71
  • MEMBER
  • 354 POSTS
Here is before and after shots. Can I wait about a week or so to clear? This is marine topdide Alkyd paint, or not clear.
Was this
answer
helpful?
Yes
No
Sunday, July 24th, 2016 AT 1:20 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
As long as the paint is dry you can clear it
Was this
answer
helpful?
Yes
No
Sunday, July 24th, 2016 AT 8:14 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
From the pictures the paint is too dry. Adjust the gun to have more paint and turn the air down a little, if the fan is too wide it will cause this too. You want the paint to flow on there, it is an art. But no matter what you can always color sand and buff when done it will look great.
Was this
answer
helpful?
Yes
No
Sunday, July 24th, 2016 AT 8:39 AM
Tiny
ROYCAR71
  • MEMBER
  • 354 POSTS
What be recommended sanding grade before polish? Thanks.
Was this
answer
helpful?
Yes
No
Friday, July 29th, 2016 AT 2:31 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
Yes, 800, sand smooth then buff and wax, please send pictures when done, we would like to see it

Best, Ken
Was this
answer
helpful?
Yes
No
Friday, July 29th, 2016 AT 8:31 AM
Tiny
ROYCAR71
  • MEMBER
  • 354 POSTS
I have 2-3 coats of rustoleum automotive clear coat over paint, isn't 800 to course to burn through my clear to fast, or can I use 1500 to 2000 than Polish?
Was this
answer
helpful?
Yes
No
Friday, July 29th, 2016 AT 12:44 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
800 is fine prior to polishing.
Was this
answer
helpful?
Yes
No
Friday, July 29th, 2016 AT 3:20 PM
Tiny
ROYCAR71
  • MEMBER
  • 354 POSTS
Thanks
Was this
answer
helpful?
Yes
No
Friday, July 29th, 2016 AT 5:06 PM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Did you get rid of the orange peel problem Roy? From my experience, that could also be an issue with how you prepped the body for paint.
Was this
answer
helpful?
Yes
No
Saturday, July 30th, 2016 AT 8:57 AM
Tiny
ROYCAR71
  • MEMBER
  • 354 POSTS
The orange still exist, I waxed and buffed it smooth out orange peel some.
Was this
answer
helpful?
Yes
No
Sunday, August 14th, 2016 AT 9:48 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,895 POSTS
The images didn't turn out can you reload them?
Was this
answer
helpful?
Yes
No
Monday, August 15th, 2016 AT 11:47 AM
Tiny
ROYCAR71
  • MEMBER
  • 354 POSTS
Sorry I took long to reply. Had problems uploading. I'm little disappointed because paint looks spray painted. Currently, I am experimenting with car wax to get better gloss. Any ideas will be appreciated thanks.
Was this
answer
helpful?
Yes
No
Saturday, August 20th, 2016 AT 1:56 AM

Please login or register to post a reply.

Sponsored links