blakep82
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| posted on 17/11/10 at 09:53 PM |
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paint again
bought the rc boat of david last week, and this week started on sorting the body for a paint job 
the original paint wasn't to my taste, and also had a sort of cracked finish on the paint (not the fibreglass), so decided to fill the cracks in
the paint with filler primer, and then was going to sand down, looked great
 
Description
left it a few minutes to dry out, and got this again
 
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which must be what happened to the original paint. but how can i stop this happening again? don't know what the original paint was, and although
i haven't asked him, i think it was like this before david got it.
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austin man
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| posted on 17/11/10 at 09:57 PM |
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you need barcoat or to strip it back totally. The paint underneath is not compatible and is soaking the thinners up from the new paint making it
shrink. You can get barcoat in aerosol or by the litre. Ensure the new paint hardens before repainting
Life is like a bowl of fruit, funny how all the weird looking ones are left alone
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blakep82
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| posted on 17/11/10 at 10:01 PM |
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ah nice one where will i get barcoat? can it be bought from somewhere like halfords?
if i was to use cellulose thinners, i think it would ruin the fibreglass? what about nitromors? will that affect fibreglass? i'd prefer to strip
it all back really
________________________
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don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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PSpirine
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| posted on 17/11/10 at 10:04 PM |
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I'd be wary, I've had this happen on a real boat, and it was because the first layer of paint didn't like the fibreglass resin. Even
with a barcoat over it, the cracks eventually spread through (then it peels off).
Sand back to bare fibreglass, then use a paint that you know is compatible (can take a while for the cracks to show through).
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austin man
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| posted on 17/11/10 at 10:11 PM |
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agree the only real way is a full strip back Sanding is the best way but laborious, I would still apply barcoat either way, you can buy this from some
motor factors so I think Halfords will supply it
Life is like a bowl of fruit, funny how all the weird looking ones are left alone
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blakep82
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| posted on 17/11/10 at 10:17 PM |
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i originally started with sanding back the original pint, but its VERY hard, i tried 60 grit paper, and it made little difference, so thats why i
tried filling the cracks rather than sanding
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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thunderace
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| posted on 17/11/10 at 10:58 PM |
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looks like there is wax or silicone from the origanal mold on it and the paint wont stick ,if your near cumbernauld pop into rods bodyshop telford
place and we will have a look for you i have used nitromors myself but you need to be very carefull you dont melt the gell coat.
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jossey
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| posted on 18/11/10 at 08:55 AM |
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strip it down totally.
and ensure you clean it properly.
dave
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