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Scratched gel coat, wanting to clear coat over it. *Photos inside*
Scratched gel coat, wanting to clear coat over it. *Photos inside*
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Scratched gel coat, wanting to clear coat over it. *Photos inside*
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carbon man
carbon man
posted 9 Years Ago
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Hi, I make some carbon fibre parts using clear polyester gel coat .
Fresh out of the mould and there are some swirl scratch marks which i then use a machine polisher clamped to a bench and in some cases having to 1200grit some worse marks out. To then get a great finish takes agggges! polishing with a hard compound pad and then a soft one.
( The carbon photo is fresh from the mould)
I really want to look into spraying a clear coat over the gel coat in order to get a perfect finish and save alot of time.
How ever im a complete newb when it comes to spraying.
What gun?
what compressor?
what lacquer?
technique?
Can i achieve a perfect finish on the clear coat from spraying alone or will this then involve more sanding and polishing?
I tried a rattle can lacquer (Just playing around, i know these are not good) and ended up with lots of dust or pin hole size bubbles.
Also i spoke to the man in the paint store who told me this wont work because the sanding marks will be seen through the new lacquer which im not sure is true.
Look forward to your response.
Thanks
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davro
davro
posted 9 Years Ago
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Hanaldo is quite correct about getting a perfect finish from the gun.
I have been spraying for about 20 years on "personal projects" in a less than perfect setup and I can get a very good finish "from the gun" but this means putting down about 6/8 layers.
Working up from a 1000/1200 towards a 3000 then hitting it with a final "perfect" layer, then compounding back with FARECLA G3 compound followed by FARECLA G10 finishing compound then polishing!!
It takes time and practice to get to know your materials and equipment, also building an environment that is safe and can remove lots of over spray quickly to avoid it settling on the work piece, if you are messing with 2K spray paint get the best face mask you can afford.
(if it was easy everyone and their dog would be doing it) but if you can master this process you will really have the patience for just about anything
Pin holes are your enemy! and dusty finishes are indicative of a spraying environment that is not removing the over spray from the room quick enough.
This is the gun and 2k clear coat I use, it's not the very best on the market but it's very reasonable (£60) for an HVLP (High Volume Low Pressure) gun also the slg-610 will run off a small compressor
BTW
perfection is an aspiration a hope or ambition of achieving something but in reality we never quite reach it
David Stevens
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9 Years Ago by
davro
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Scratched gel coat, wanting to clear coat over it. *Photos inside*
carbon man
-
9 Years Ago
If you're new to spray painting, this certainly won't save you any time. It takes quite some...
Hanaldo
-
9 Years Ago
Hanaldois quite correct about getting aperfect finish from the gun. I have been spraying for about...
davro
-
9 Years Ago
Hi thanks for the replies. For now I think I will struggle on with how I'm going. I didn't realise...
carbon man
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9 Years Ago
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