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The 2-Stroke Garage => General Chatter => Topic started by: LMS on April 04, 2023, 09:05:07 AM

Title: Painting ABS plastic seat pan???
Post by: LMS on April 04, 2023, 09:05:07 AM
I bought an ABS 'paint ready' seat pan and I have no idea what, 'paint ready' means. I would assume that I would just scuff the pan and shoot it with the base color? This is not the pan I have, but it's the same material...
https://www.mikesxs.net/bug-eye-cafe-racer-seat-pan-abs-plastic.html

With some plastics, you shoot it with adhesion promotors, flexible primer, etc.
Anyone painted one of these?
thx.
Title: Re: Painting ABS plastic seat pan???
Post by: m in sc on April 04, 2023, 11:28:06 AM
i would suggest vinyl dye spray or bumper paint.. but why bother? 
Title: Re: Painting ABS plastic seat pan???
Post by: pidjones on April 04, 2023, 01:05:09 PM
99% of motorcycle fairings are ABS these days, I believe. I usually start with rattle-can etching primer, then lacquer or water-born color, then 2k clear.
Title: Re: Painting ABS plastic seat pan???
Post by: LMS on April 04, 2023, 03:18:33 PM
Why bother, because I'm painting the tank and seat pan the same color. Believe me, they make the abs look great in pictures, but there are tiny imperfections all through out.
Found a 'few' how-too after posting this, but it seems like all painters have their own technique. I'll start by testing the underside with scuffing, etc. to see how it fares.
Thanks.
Title: Re: Painting ABS plastic seat pan???
Post by: m in sc on April 04, 2023, 03:48:50 PM
reason i asked is, can you see the pan when its on the bike?
Title: Re: Painting ABS plastic seat pan???
Post by: IR8D8R on April 04, 2023, 04:34:29 PM
ABS should be rigid plastic. Prep and primer would be more important on ABS I think. If you don't get it degreased thoroughly it will peel. "Paint surface cleaner" like 'Finish1' after 600 grit and scotch brite.
Car painters used to use a "flex-add" additive for Firebird noses, Fieros, and Saturn body panels, but that Enduroflex was some kind of FRP, urethane, and rubber sandwich. Paint would crack if it didn't have the additive. Insurance body shops always left it out and your paint cracked and peeled.

I tried some of the Krylon spray paint made specifically for plastic on Lexan. It didn't stick. I complained to Krylon and they sent me a big box of the same stuff that didn't work. Like 20 cans of spray paint. I appreciated the effort but...

IR8D8R
Title: Re: Painting ABS plastic seat pan???
Post by: LMS on April 04, 2023, 04:38:22 PM
Quote from: m in sc on April 04, 2023, 03:48:50 PM
reason i asked is, can you see the pan when its on the bike?
Yep, it kind of looks like the one I posted. The sides under where the cushion attaches can be seen along with the hump on the back.
Title: Re: Painting ABS plastic seat pan???
Post by: LMS on April 04, 2023, 04:45:56 PM
Quote from: IR8D8R on April 04, 2023, 04:34:29 PM
ABS should be rigid plastic. Prep and primer would be more important on ABS I think. If you don't get it degreased thoroughly it will peel. "Paint surface cleaner" like 'Finish1' after 600 grit and scotch brite.
Car painters used to use a "flex-add" additive for Firebird noses, Fieros, and Saturn body panels, but that Enduroflex was some kind of FRP, urethane, and rubber sandwich. Paint would crack if it didn't have the additive. Insurance body shops always left it out and your paint cracked and peeled.

I tried some of the Krylon spray paint made specifically for plastic on Lexan. It didn't stick. I complained to Krylon and they sent me a big box of the same stuff that didn't work. Like 20 cans of spray paint. I appreciated the effort but...

IR8D8R

Yep, it's pretty rigid. Thanks for the tips. I was reading to clean, clean, and clean some more, then clean again because when they inject these, I guess mold/dirt, grease can be a huge issue.
Sooooo, scuff with gray pads along with scuff paste. Clean again, follow with anti-static wipes, then adhesion promotor, prime, paint. What a pain.
Title: Re: Painting ABS plastic seat pan???
Post by: m in sc on April 04, 2023, 09:14:04 PM
ahh, i missed the link the 1st time. my bad.

Title: Re: Painting ABS plastic seat pan???
Post by: pidjones on April 05, 2023, 06:30:31 AM
Just be careful with solvents. ABS is dissolved in acetone to make ABS cement. I use soap and water, rinse well, dry, then 91% isopropyl alcohol to clean. Lacquers (like many rattle-can primers) attach well because they have solvents like acetone in them. Need 2k clear to hold up, though.
Title: Re: Painting ABS plastic seat pan???
Post by: rodneya on April 05, 2023, 10:17:24 AM
Clean, scuff slightly and then spray a coat of adhesion promoter before priming.
Title: Re: Painting ABS plastic seat pan???
Post by: LMS on April 09, 2023, 06:26:02 AM
Thanks all. I have a pretty good plan now, fingers crossed this works out.