Classic cars forum & vehicle restoration.
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vitesse
Joined: 03 Jun 2013 Posts: 561
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Posted: Wed Jun 05, 2013 2:19 pm Post subject: Orbital Sander Grit Sheets |
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Hi I am new on here and about to start sanding down a 1966 Fiat 500 that I will start a new thread on so members can follow my progress.
I found the site by googling Fiat 500 restoration and found Colwyn500's superb thread.
My problem to start with is I don't need to rub the down to bare metal all over but there are place where surface rust requires that I do. Can you recommend what grit sheets I should start off with? I have been told 240 followed by 360 but it hardly seems to touch it, I want to go back to the first coat.
I was in a body shop yesterday and they recommended 80 followed by 180 but not sure if this maybe a bit aggressive.
Look forward to your suggestions.
Tony |
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ukdave2002
Joined: 23 Nov 2007 Posts: 4105 Location: South Cheshire
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Posted: Wed Jun 05, 2013 3:06 pm Post subject: |
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Hi Tony I'd agree with the body shop
If you are going back to metal use an 80 grit; as you sand the high spots will show up first either mark them or deal with there and then as they more difficult to spot later.
Any low spots will also be evident as they will be the last to get down to metal again mark or deal with them as you progress. Any lows that can't be tapped out, fill and flatten the whole panel with 180, spray a guide coat or use some of the Farecla guide dust, sand it off and stopper any other lows , flatten with a 240. Etch prime (don't flatten) then high build prime flatten with 400, then 600 and then put the colour/gloss on. flatten the gloss (unless you are a brilliant painter and its not required!) with 1500, and finally flatten with something like Farecla G3 compound, stand back and admire your glass like finish
Finally, use quality abrasive like Mirka or 3M, they are more expensive than the cheap ones but don't clog as much and last much longer.
Dave |
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vitesse
Joined: 03 Jun 2013 Posts: 561
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Posted: Mon Jun 10, 2013 11:54 pm Post subject: |
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Cheers Dave sorry for my slow reply been doing the 80 grit and seems to be doing the job.
Your post makes it sound like a 10 minute job
I googled Farecla how does it work? Do you paint it on a panel where you think you have imperfections and it acts as a filler. Can't quite get my head around it? |
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bob2
Joined: 06 Dec 2007 Posts: 1727 Location: Malta
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Posted: Tue Jun 11, 2013 7:34 am Post subject: |
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I think the farecla guide dust that Dave mentioned is a talc like black powder that you use instead of spraying a guide coat on, it does not fill any imperfections but just guides you to any imperfections while you are sanding. |
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