spray painting plastic- best primer

Spray painting plastic is hard, this is the best primer I have found and the tests I did to back them up.
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[Hollaware]

New Test Variables:
1) Pressure Washer Test (15° nozzle @ 1, 2, and 3 ft. and other relevant settings for item's use specifics)
2) Fade/UV Resistance Test (direct sunlight for 8 hrs. for 1 month. Time permitting, a 6 and 12 month followup short video of results)
Possibly add followup results of other items tested in a 'followup video' with items tested at different time intervals.
This video was great. Good Job and thank you for the time and effort you spent on making it.

[Nu-techdirect]

I use rubbing alcohol to clean the surface first. When dry then I prime with Rustoleum Self Etching Primer - Gray. Then what ever Rustoleum 2X color I need. Finish with Rustoleum Matte Clear Coat. I have camo painted all my pellet rifles, shooting benches / tables (folding tables which are plastic). I have also painted T-Fal frying pans, these make excellent cheap plinking targets. Any paint I used without the self etching primer would flake off in big chunks when struck with pellets. This stopped when i switched rustoleum self etching primer. I know its a bit off topic, but the point Im trying to make is this Self Etching primer is awesome on plastics and tough as nails. I don't have to repaint my plastic surfaces anymore due to normal wear and tear. Great Video! :)

[corin]

The "Purple Primer" is essentially "Acetone" which PVC makers recommend for priming PVC. The purple coloring is for building inspector's benefit. It's an indication that the PVC piping was primed before the bonding solution/agent was applied.

[maxsanquen]

Caution ! The purple PVC primer is a great bonding agent! .. However if you are going to spray paint a white or lighter color the purple color will bleed up through the paint and leave a splotchy purple cast in your finished paint, Even with numerous coats of paint the purple will reappear. Oatley does make a clear PVC primer that works very well and won't bleed through your finished paint.

[ericjohnson]

Chemist here with a few years coating chemistry experience. Never though of purple primer for polyethylene especially HDPE. Makes sense. Solvent softens HDPE and let's materials penetrate the polymer network. I looked at ingredients over 10 years ago and, back then, listed a chemical used to bond scratch resistant coatings to polycarbonate eyeglass lenses. So it makes sense for purple primer to help bond paiit to plastic. Now I have a resin shed converted to home office that needs its roof painted and this looks better than anything made by paint companies.

[kitalia]

This actually makes me super happy to see. I did so much sanding of pipes last year to paint. I was so afraid it wouldn't hold up through storage. I feel so much better knowing I took the time that they may make it through.

[MichaelGa]

Main solvent in pvc primer is acetone. Fast acting solvent used to soften, clean and prepare plastic. Nothing of adhesion is left behind. You are painting chemically treated raw plastic. Purple is mainly a visual indicator. Once opened, they both quickly disappear from the can. Even with the top on. Makes it hard to keep on our trucks.

[scottwatts]

Kudos to presenter. So many amatuers are SO BAD at presenting otherwise great information but this video was to the point, well thought out, and presented very well. GREAT JOB!
🥳

[mattzelonka]

MEK is a amazing chemical. That is one of the chemicals in purple primer. I believe in the raw form it has been banned. Engine (enamel) paint or high temp (grill paint) work amazingly well. We used to paint the rims of our Vw with it and it held up the best. I painted a old milk can with engine paint and it has been in my yard in the rain and sun daily for 30+ years and its still looks red and shiny.

[vonitadustylgreen]

Thank you Allen. Since I just got into lots of crafts 3 years ago this is going to help me so much. You and Shannon stay safe. Stay blessed. Love and Hugs to you both.

[CobwebsandCandlesticks]

Loved this video! As an automotive painter I always sand and never paint anything shiny. I use a ready to spray adhesion promoter when painting non steel.

[kelbrl]

This was soooo helpful! Thank you! I've always had a hard time painting plastic so this is exactly what I need

[slipspectrum]

Old video, but Flame treating plastic works well. You use a propane torch with a a wide nozzle and a soft flame. The idea is to just “kiss the surface” without melting, moving the flame quickly. It should look like you did nothing to the surface when you are done, maybe a little soot left behind. It essentially releases free radicals on the surface of the plastic which will grab onto paint and or adhesives. It’s what the experts in the plastic manufacturing world use to treat next to impossible to bond plastics like HDPE/ LDPE.

[tommynjes]

Everything I search on how to, I get extra excited when I see there is a Stilt beast video on the subject.

[Cisco]

The purple primer gets my vote! Thanks !

[Bildgesmythe]

Your comparison videos are invaluable! Thanks for all your time and hard work!

[mljezierski]

Thanks so much for doing this. I've used spray adhesive, and didn't have much luck either. Sanding was my alternate, and I hated doing it. I will use the purple primer on my next project. Thanks again; you're awesome!

[grimpath]

Haven't looked recently, but they used to sell untinted PVC primer. They started making it purple so plumbing inspectors could easily tell primer had been used in construction. Also, you can get the primer in a spray can now, more expensive, but I know you weigh cost vs ease vs time too. You may also be able to use it through an air gun, but I don't know, it is quick drying so it might clog up quickly.

[rebeccasinton]

Thank you Allen for sharing the video! It saved me a lot of trouble with beautifying the old plastic corrugated roofing panels of my front porch. Two thumbs up!

[TriangleHaunter]

I've used the 3M spray adhesive to get spray paint to adhere to plastic wrap when making noodle roots and vines. Works pretty good. Paint hasn't scratched off yet and it does get a bit beat up with setup and tear down every year, but that was on plastic wrap and not on HDPE/PVC plastic.