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Old 10-22-2013, 07:10 AM
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Sanding and buffung 2 rounds of 2k clear

I am thinking of sanding my 2 rounds of clear to get rid of some runs, dust and minimize orange peel, note this is not a show car but want it to look ok
I want to wet sand it by hand before buffing, what sandpaper should i start with, 1000 or maby 1500 ?
note this is only 2 rounds of 2k clear.

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Old 10-22-2013, 07:50 AM
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If your going to cut out some runs....be careful....you can start with a coarser grit of paper than 1,000. You want to cut the run out and a coarser paper like 600 or 800 grit wet paper on a block will cut faster and more aggressively remove the run. Several months ago, Shine gave me an excellent tip on cutting out runs and I'll pass it o to you.

Take a 2" piece of masking tape, tape over the run, put some 600 grit wet paper on a block and gently start sanding the area where the run is and that is covered by the masking tape. The sand paper will cut through the tape and leave the surrounding area unsanded because it's protected by the masking tape. When the run is flush with the tape, remove the tape and switch to a finer grit like 800 wet, again, on your block. Gently sand, let the paper do the cutting, when you have removed the 600 grit sand scratches with 800 move to 1,000, then 1500 then 2000 and even 2500 grit wet paper...every grit...LET THE PAPER DO THE WORK...DO NOT APPLY PRESSURE TO THE BLOCK and then you can polish the area.

Hope this helps.

Ray
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Old 10-22-2013, 08:02 AM
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cool trick i was thinking taping around the area , this sounds better.
but this is not wet sanding is it?

what about where runs are not, can i use 1000 ore 1500 to start with (wet)
only 2 rounds of clear dont wanna go through
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Old 10-22-2013, 08:06 AM
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I mean, do u wet sand on top of the tape with the 600?
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Old 10-22-2013, 08:10 AM
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Yes, you wet sand on top of the tape...the 600 will cut through the tape, exposing only the run. You can most definitely start with 1,000 grit wet where you don't have runs. The trick to doing this for polishing is that you need to remove the sand scratch from the previous grit of every step up in grit you take...so that when you are done finish sanding say with 2,000 or 2,500 grit paper, that's the only sand scratch you have left to polish....and not a sand scratch left from the 1,000 grit you started with.

Ray
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Old 10-22-2013, 08:18 AM
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Thank you sir, and have the nicest day
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Old 10-22-2013, 08:54 AM
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i use 320 wet to cut through the tape and cut down the run.
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Old 10-22-2013, 09:05 AM
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ok, do you use it wet?
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Old 10-22-2013, 09:06 AM
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sorry did not see you used it wet
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Old 10-22-2013, 09:16 AM
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320 wet paper is fairly aggressive, and I agree with shine that it does cut the run out faster, but, keep in mind, you need to remove those 320 grit scratches....if you start with 320 wet, again, caution and step up to 600 wet to remove the 320 sand scratch....don't go from 320 wet to 1,000 grit wet...you'll be there all day and still may not get all the 320 grit sand scratch marks out.

Ray
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Old 10-22-2013, 09:28 AM
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yebb, i have 400 i use that, thanks
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Old 10-22-2013, 09:30 AM
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agree. i use the 320 to cut through the tape and take off the top of the run. then move up to 600 . it takes the 600 a while to get through the tape .
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Old 10-22-2013, 10:41 AM
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Go veeery carefully. I normally don't start with less than four coats. It will be even more difficult since it will take more aggressive sanding around those runs.
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Old 10-22-2013, 10:47 AM
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Quote:
Originally Posted by 69 widetrack View Post
If your going to cut out some runs....be careful....you can start with a coarser grit of paper than 1,000. You want to cut the run out and a coarser paper like 600 or 800 grit wet paper on a block will cut faster and more aggressively remove the run. Several months ago, Shine gave me an excellent tip on cutting out runs and I'll pass it o to you.

Take a 2" piece of masking tape, tape over the run, put some 600 grit wet paper on a block and gently start sanding the area where the run is and that is covered by the masking tape. The sand paper will cut through the tape and leave the surrounding area unsanded because it's protected by the masking tape. When the run is flush with the tape, remove the tape and switch to a finer grit like 800 wet, again, on your block. Gently sand, let the paper do the cutting, when you have removed the 600 grit sand scratches with 800 move to 1,000, then 1500 then 2000 and even 2500 grit wet paper...every grit...LET THE PAPER DO THE WORK...DO NOT APPLY PRESSURE TO THE BLOCK and then you can polish the area.

Hope this helps.

Ray
Widetrack, Have you ever tried the poly putty trick to sanding runs? I forgot where I recently saw it but would do similar to what the tape does.
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Old 10-22-2013, 11:05 AM
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i have seen that, dont want to try that, more for pro i think.
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