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Painting cut acrylic
Hi guys,
I’ve got to paint some cut acrylic and I just wanted to check with you lot that I’m doing it the right way.
Going to key the surface using 200 wet and dry, then wipe over using IPA (Isopropyl Alcohol). Paint using exterior grade sign gloss paints – I’m planning to roller on using a nice little gloss nap roller, edges will go on the same.
These are being installed pretty high on a building (over 6M high) so don’t really need to be sprayed. Lettering only is up to 1000mm high and is 10mm opal cast acrylic.
What d’ya think?
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7 Replies
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I’d be inclined to use a self etching primer or a plastic primer Lee. Ordinary gloss will just sit on the surface and be prone to scrapping or moisture getting behind the film and lifting it off if it becomes cracked (from normal expansion and contraction/weathering)
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Thanks Harry…See I knew I’d get a sage reply here 🙂
I’ve got some self etch primer that I usually use for Aluminium so I’ll use that.
Cheers mate 🙂
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Sage? That’s an ‘erb ain’t it? 😀
Make sure to radius the edges too Lee, to prevent cracking, if I was doing this too I would make sure to u/c well (two coats at least) -
Will do mate.
Ta!
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Spray it with vinyl screen printing ink. No rubbing down necessary just spray.
A lot less hassle and a darn sight quicker = more profit!Daft question….could you not get the right colour in acrylic????
Just a thought, if you use clear acrylic and spray the reverse side with either vinyl ink of car cellulose or equivalent you will get a fantastic weatherproof finish.
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I did think about doing that Mike but I wondered how the finish would hold up to being glued to the surface of the building.
I do like the effect though, any ideas if it would hold up?
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I wouldn’t glue it to the building, use stand off fixings on letters that size to allow for expansion and contraction.
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