garyo
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| posted on 30/1/15 at 08:48 AM |
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Rattle can or compressor dilemma
I have an old 2.5 metre long roof box that I need to repaint black. The plastic it's made from has a mottled finish so it doesn't need to
be the best paint job in the world. It's probably 2.5 square metres in area, and currently silver in colour so will need a couple of coats.
I have a compressor with all the paint gear, unused. Nothing fancy - just some Sealey stuff.
My question is the most practical way forward. I've never used a compressor before but feel up for some fun, but what sort of coverage would I
get with rattle cans, and by the time I've bought 1L of cellulose, a 5L can of thinners, etc, am I going to be £40 in to a job that I could have
rattled canned for the half the price anyway?
A different way of phrasing the question: I can buy 330ml rattles for £3 a can, but how much paint is in there, versus propellant. Versus the 1L of
cellulose I can buy for £14 that requires 1:1 thinning.
Cheers
Gary
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r1_pete
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| posted on 30/1/15 at 08:56 AM |
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Cellulose primer is no good on plastic, you'll need an etch primer, otherwise the paint will flake off quite quickly.
Halfords used to do a plastic paint which effectively dyed the plastic, I used it on a plastic cam cover, which got chucked about the garage for ages
with no chipping etc.... Could be a cost effective route....
 
Rescued attachment Halfwits paint.JPG
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Slimy38
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| posted on 30/1/15 at 09:26 AM |
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If it's the typical textured plastic I might go with a roller. A lot less messy, and the finish will still be pretty decent.
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trextr7monkey
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| posted on 30/1/15 at 10:12 AM |
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Another vote for the roller
Have a look at the Rustoleum range of metal paints they do an adhesive primer which goes on first followed 15 minutes later with the colour. It sticks
extremely well and any spare paint can be used around the garage on other metal projects
Hth
Mike
http://www.flickr.com/photos/14016102@N00/ (cut and paste this dodgey link)
Our most recent pics are here:
http://s129.photobucket.com/albums/p211/trextr7monkey/
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garyo
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| posted on 30/1/15 at 10:20 AM |
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Cheers chaps. Something like this then... Rust-Oleum Universal All Surface Brush Paint &' Primer Black Matt - 750ml
6.5M coverage and no messing around cleaning spray guns :-)
How much confidence do we have in the 'built in primer'. I can run over the box with a solvent cleaner and wire brush in the angry
grinder for a key.
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bi22le
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| posted on 30/1/15 at 12:29 PM |
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Rattle cans are great but not for big surfaces.
Their coverage is small so you will always end up with strips of different thicknes of paint. These will show up in a gloss and less gloss style so
will not be hidden by your plastic mottle.
Roller sounds very sensible.
Track days ARE the best thing since sliced bread, until I get a supercharger that is!
Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1
Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I
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mark chandler
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| posted on 30/1/15 at 01:05 PM |
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Roller wins hands down, make sure you use a wooly one, the foam ones melt.
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trextr7monkey
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| posted on 30/1/15 at 07:05 PM |
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quote:
Originally posted by garyo
Cheers chaps. Something like this then... Rust-Oleum Universal All Surface Brush Paint &' Primer Black Matt -
750ml
6.5M coverage and no messing around cleaning spray guns :-)
How much confidence do we have in the 'built in primer'. I can run over the box with a solvent cleaner and wire brush in the angry
grinder for a key.
Checked my tin of primer and its called combi. Primer and has the phrase adhesion primer in the sub title it is a clear runny solution we used it
under the green paint on fibre glass body of car in avatar and it stuck well
you probably won't need to rough up the surface as the adhesion primer gives the key and we used foam roller like us ed for gloss paint
atb
Mike
http://www.flickr.com/photos/14016102@N00/ (cut and paste this dodgey link)
Our most recent pics are here:
http://s129.photobucket.com/albums/p211/trextr7monkey/
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