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Spray Painting MDF
Fozzy The Bear:
--- Quote from: javeryh on November 13, 2006, 11:46:45 am ---Fozzy - is the PVA really just regular old white glue (like Elmer's)?
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Sorry I have no idea what Elmers is... I live in the UK and we don't have that brand over here.
What you need to look for is sold as weatherproof or Exterior Use(waterproof once dried) PVA Glue. It is a white glue, so maybe the Elmers brand you're talking about would do the job. The brand I use over here is EVO-STICK Weatherproof Wood Adhesive (sold by B&Q and no doubt by other retailers as well)
In reply to "Mamed For Life" Yes it's fine to roller onto it afterwards. But do make sure you follow the sanding instructions for the best results, and try one of those smooth foam glossing rollers.
Best Regards,
Julian (Fozzy The Bear)
Mamed for life:
--- Quote from: AlanS17 on November 13, 2006, 07:10:56 pm ---What are you buying that costs $80 per liter??? That $20 ought to buy you enough primer to do a couple of cabinets.
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Hi AlanS
Yeah, that my point: when I went to B+Q (UK retailer) I asked for primer for MDF and was told that that was the only one they had. Looking back now, I must have my numbers wrong; but it was only the small tins, you know (1 litre)? From what i've seen on the boards, I was going to prime at least 2 or 3 times, and one of those little tins looks like you wouldn't even get one coat on a cab out of it! At least, not the way I splash paint around.
Thanks for the tip Fozzy, I'm going to try your recommendation!
sealslayer:
If your spraying then your better off using a primer that's the same chemical as the gloss topcoat, i.e acrylic, 2pack,cellulose etc..
Primer in spray cans seals the MDF perfectly well especially if its filler primer or high build primer.
Remember your top coat of gloss is only going to be as smooth as your primered base coats.
Rolling primer on then spraying on top will look awful unless you sand it down to nothing, if that's the case then you may as well spray the primer from the start to get the smoothness rather than rolling or painting with a brush.
For quality of finish you can't beat spraying especially if your cab is already built, trying to use a roller on joined edges without leaving any roller or brush strokes is very awkward and time consuming and a major pain in the ass.
Personally I would never hand paint again, I'd either spray, or for the perfect result with less mess and time wasted I'd laminate it.
javeryh:
I'm going to give the spray painting a try on some scrap MDF. I had problems on my last cab getting into the corners/joints and making everything look smooth (there are a few small runs). I will be butying the paint in cans though because I don't have a sprayer or anything. In order to get a smooth, mirror-like finish I guess I'll pick up:
1. white primer/waterproof glue (I'm going to try both methods)
2. colored paint
3. sandpaper
4. rubbing compound
Is there anything I'm forgetting? How many coats of each should I put on there?
ahofle:
Just curious why so many people are after glossy/mirror finishes on their arcade cabs. I don't recall ever seeing an actual cab that was glossy.