Flatting paint nibs with a stone? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 01-08-2006, 12:13 PM
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Flatting paint nibs with a stone?

Hi all

I was watching Hotrod build off last night & the one guy was talking about flatting paint nibs with a stone. Does anyone know about this? I am always interested in getting my work as good as possible.

Steve.

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Old 01-08-2006, 01:10 PM
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No, never heard of with a stone. Is it possible you are talking about using a nib file. This is basically a small block of wood that has a small file attached to shave off the dirt nib. One of my early bodyshop jobs, we got quite a few dirt nibs in the booth. No matter how much you wet down the walls and cleaned the booth, about the only time you got a pretty clean paint job was when it was raining outside. Sometimes though the file will want to rip some of the dirt specks right out of the paint taking the paint with it. I just use a block or flat hand and wetsand dirt specks out by hand without using a nib file at all anymore. Then dry the panel and once sanded it will be easier to see how you are as far as dirt nibs. If you still see some, just wetsand those areas more. I also have heard of people shaving dirt nibs somehow with a razor blade, but for typical dirt and trash that lands in the paint, just wetsanding seems to work fine for me.

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Old 01-08-2006, 04:16 PM
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The razor blade is for scraping clear runs primarly. I guess you could nib a speck with one but it's usually taken care of with the sanding.
I saw a plastic razor blade scraper advertised in a mag today which seemed interestering. Nice for knocking down paint edges on graphics.
As for a "stone" of some sort,News to me.
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Old 01-08-2006, 04:40 PM
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I had a stone for that purpose a long time ago. I haven't seen them for sale in a while. It was basically about a one inch cube of that stone they make for sharpening knives. Must have been equivalent to about 400/600 grit paper. Worked good too.

Larry
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Old 01-09-2006, 12:53 AM
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Mc guires makes the stone. they come in about 5 grits from about 400 up to 3000. They work way better than paper or razors. (for me anyway) I used one on a triumph daytona fairing that I painted black. My ineptitude with the spraygun netted me about a dozen runs. That block straightened every one of them out. I used the 1500 grit one, then sanded all with 1500 and buffed it out. You couldn't tell at all. Made me look like a professional. Well ok, almost a professional. I'm sure that it would make short work out of nibs if they were too big to sand out. Here is a place that sells themhttp://www.detailsupplydepot.com/scripts/depot.exe?pgm=dsd4.bbx. scroll down the page. Any place that sells mcguires products should have it in their catalog . I hear if you store them in water and keep them wet they last a really long time. I think they are 12 or 15.00.
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Old 01-09-2006, 07:41 AM
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i use the stone at work everyday working in the touch up dept at nissan. it works great on blocking down sags and drips and large nibs and craters, just be careful with craters, you can burn through if it is a deep one. once i block down the defect, i wet sand with 2500 and buff it out. we keep ours in a small cup of alcohol. if you use water, it will lose its bite too quickly. keep it sharp by blocking it on a piece of 1000grit sandpaper.
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Old 01-09-2006, 12:07 PM
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thanks guys..im going to get myself one of those. I use the 3M trizact system for all over sanding/polishing but I like to get the bad nibs out first.
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