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Any suggestions for removing runs?
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crvc
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PostPosted: Tue Jul 14, 2009 7:13 am    Post subject: Any suggestions for removing runs? Reply with quote

I'm repainting my bug with Napa single stage martin senour paint. using Harbor's cheapest spray gun. This part came out well except for one run. Other parts, like the fenders, not so lucky.

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JinxedSydney
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PostPosted: Tue Jul 14, 2009 8:15 am    Post subject: Reply with quote

Color sanding, in the sticky section up top:

http://www.thesamba.com/vw/forum/viewtopic.php?t=181574
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anthracitedub
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PostPosted: Tue Jul 14, 2009 9:34 am    Post subject: Reply with quote

Id sand it down and repaint it, if its just the deck lid.
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crvc
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PostPosted: Tue Jul 14, 2009 10:45 am    Post subject: Reply with quote

Thanks for the replies. I wish I'd read this section BEFORE painting, not after. If I sand the spot, is it possble to get the glaze back using 3000grit paper?

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hellbentt
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PostPosted: Tue Jul 14, 2009 11:43 am    Post subject: Reply with quote

I take a razor blade, bend it slightly and shave it off as much as I can, without going too far, then wet sand, starting with 800 grit, then 1000, 1500, 2000, then get out the buffer, not the orbital kind! The kind with variable speeds and a foam pad. 3m products work great! I used 4 different "grits" I just painted my 62 ragtop dark brown and you can not see where the run was!
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crvc
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PostPosted: Tue Jul 14, 2009 2:02 pm    Post subject: Reply with quote

Can it be done by hand? I don't own a buffer.

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hellbentt
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PostPosted: Tue Jul 14, 2009 4:51 pm    Post subject: Reply with quote

It can be done, but it would take a long time! I got a variable speed buffer from autozone 2 years ago for about $80, still works great. I got one from harbour freight tools for my bro...he says it works well...it was on sale for $40...well worth it. you might want to use it on the whole car...it does make a great difference!
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DerrickfromNC1
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PostPosted: Thu Nov 18, 2021 1:29 pm    Post subject: Re: Any suggestions for removing runs? Reply with quote

I just finished removing multiple runs from my fresh job and I thought I would show a method I found on YouTube.

1st carefully shaved some of the run tip with a razor blade
2nd highlight runs with a mega tip(wide 1/2”) sharpie:
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3rd wet sand runs with 400 & once you get the sharpie marks almost gone switch to 1000wet.
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Runs gone:
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I decided to not completely sand down the run at the lower edge of the fender for fear that my clearcoat may not be as thick. The da with 1500g should clean up everything nicely.

Tool I used:
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This little soft block is about 3” long and allows me to focus on the runs w/o sanding the surrounding areas. Purchased from O’Reilly called a MasterPro “Small Area Sanding Kit” and comes with precut 400, 1000, & 1500g wet/dry paper. My next step will be to da sand the entire car with 1500-2500-3500 and then to the machine compound and polish.
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Naked
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PostPosted: Mon Dec 13, 2021 11:17 am    Post subject: Re: Any suggestions for removing runs? Reply with quote

. I've used 180-240 to start to cut heavy runs(but not too much) then work up 400>600-800>1000-1200>1500+. I use different sized stir sticks usually 2"-4" long(depending on the size of the run or sag). Stacked 2 thick, taped together. Never did the sharpie trick, I like to use 3M dry guide coat. Rattle can guide coats work too, just not trim black. It clogs the sandpaper.
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buguy
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PostPosted: Fri Dec 24, 2021 7:52 pm    Post subject: Re: Any suggestions for removing runs? Reply with quote

There is no need to go to that extreme with the grits. Use a razor blade to shave it down 'til it's gone or nearly gone. I would get a "run blocker" from the supply place. It's just a small metal block. 600-800 grit wet will block it right out. Buffing out by hand would be almost impossible. Gonna need a rotary buffer for that.
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