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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Body - Exterior> Cutting and buffing guidance. Parts / compound / polish selection.
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Topic Review (Newest First)
11-08-2010 09:01 AM
cyclopsblown34 The soft interface pad works great on curves. Still be a bit careful on edges, it doesn't remove much material but if you're a little thin sowmwhere, it'll probably manage to make it gone instead of thin.
11-08-2010 08:04 AM
001mustang
Quote:
Originally Posted by Rag top bird
I dont know if you have ever used this or not but it is not a wet sanding system you use a DA and a interface pad
Is it tricky to use that 3000 grit system on convex, concave and other difficult surfaces?
11-05-2010 07:37 PM
Rag top bird
Quote:
Originally Posted by 001mustang
Maybe Santa will bring me a bag of 3000 grit.
I dont know if you have ever used this or not but it is not a wet sanding system you use a DA and a interface pad
11-05-2010 07:29 PM
001mustang Maybe Santa will bring me a bag of 3000 grit.
11-05-2010 07:24 PM
Rag top bird [QUOTE=001mustang]
Quote:
Originally Posted by Rag top bird

How can you tell when 3000 has cut to the bottom of 2000 grit scratches?
Well after you are finished with the 3000 Trizact you will have a shine you can see if there are any scratches left behind and then its very easy to buff the rest out
11-05-2010 05:36 PM
001mustang [QUOTE=Rag top bird]
Quote:
Originally Posted by 001mustang
I've used 2200 before and could not tell difference compared to 1600 after 3m 5973 compound then polish. I just compared w/ my untrained naked eye.

No down side to working up to 3000 other than time and money.[/QUOT

You can buff out 1500 grit scratches the only difference it that it takes a lot more work when you finish with 3000 a light cut is all thats needed
How can you tell when 3000 has cut to the bottom of 2000 grit scratches?
11-05-2010 03:28 PM
Rag top bird [QUOTE=001mustang]I've used 2200 before and could not tell difference compared to 1600 after 3m 5973 compound then polish. I just compared w/ my untrained naked eye.

No down side to working up to 3000 other than time and money.[/QUOT

You can buff out 1500 grit scratches the only difference it that it takes a lot more work when you finish with 3000 a light cut is all thats needed
11-05-2010 11:32 AM
001mustang I've used 2200 before and could not tell difference compared to 1600 after 3m 5973 compound then polish. I just compared w/ my untrained naked eye.

No down side to working up to 3000 other than time and money.
11-05-2010 08:51 AM
V8 Super Beetle
Quote:
Originally Posted by cyclopsblown34
Why you gonna remove your bug from the paint?
Cause I would NOT like to have a bug in my cars paint job.
11-05-2010 08:49 AM
V8 Super Beetle Here's what I'm talking about.

In this demo the guy sanded with 1,200K, then used a heavy cutting compound, and then polished.

http://www.youtube.com/watch?v=C6PyXbrNbsE&NR=1


Here, this guy used 1500, compounded, and then polished. Although, I don't care for how his finish came out. The gloss I have now is shinier, and flatter.

http://www.youtube.com/watch?v=KCphE...eature=related


And last, but not least, here they used 1K grit and then just used a cutting compound with a wool and then foam bonnet. Seems like they should've went further and used polish...

http://www.popularhotrodding.com/tec.../photo_23.html
11-05-2010 08:45 AM
V8 Super Beetle Thanks for all the advice guys. I've been doing some reading and watching some videos. I'm just a little confused. I'm confused about the grits people are using, the compounds and polishes.

I see some people use 1,200 to 1,500, then buff with a heavy cutting compound, and then polish.

I've got advice to use 1,000 to level, then work my way on up through 1,500, 2K, and 3K. If I were to work through the finer grits is it still necessary to use such a heavy cutting compound as say 3M 5973 or Meguiar's Diamond Cut 85? Wouldn't I just polish it? Or does the cutting compound remove the sand paper marks even left behind from 3K paper?

I think I'm getting a handle on this, but just want to clear up a few things.
11-05-2010 08:41 AM
cyclopsblown34 Use the least coarse abrasive required for the offending spot and work progressively finer. Don't skip a step/grit either.
11-05-2010 08:39 AM
cyclopsblown34 Why you gonna remove your bug from the paint?
11-05-2010 07:38 AM
shine there is a reason they make all the set up grits. skipping one just makes more work . i can assure you that over buffing trying to get rid of 1500 scratches will kill the clear. it will shine but just not be as clear and sharp .
11-04-2010 10:10 PM
Rag top bird [QUOTE=001mustang]I'm impressed. I get bored w/ 2000 grit.

3000 grit, wow.[/QUO

yeah I rember when we finished 1200 a long time ago
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