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-   -   Whats the best way to de texture plastics? (http://www.hotrodders.com/forum/whats-best-way-de-texture-plastics-120592.html)

Steve UK 07-22-2007 02:46 AM

Whats the best way to de texture plastics?
 
Hi guys

I have been doing quite a few plastic parts lately. The customers want the grain smoothed from the plastic & a nice smooth paint job over them.

I have tried a few ways. Firstly sand the grain from the plastic. That was a big mistake because the plastic furs up & it is then a nightmare to prime & make it smooth again.

The second way is the clean the plastic, plastic prime it then followed by 2k primer with flexible addative @ 30% in it. Thats much better but I find I have to re prime 3 times before it is really sweet.

Does flexible additive make the primer less high build? Whats your thoughts guys?

flyinbrick 07-22-2007 04:32 AM

hi there.

I suggest using a fairly fine wet and dry paper and tons of water- im pretty sure that wont fuzz.

baddbob 07-22-2007 07:53 AM

Sand the texture off then go over it well with a red/maroon scotchbrite wet and that usually knocks most of the fuzzies off, prime, sand and reprime if necessary.

Steve UK 07-22-2007 10:40 AM

Bob the last plastic I sanded was rough. It was like trying to prime a furry blanket ha ha

When you say sand it down, what grit are you thinking?

mrcleanr6 07-23-2007 05:37 AM

i usually have to do this alot for the sportbike guys. you can sand it off and that is really probably the best way but it is alot of work getting it off and resurfacing. i usually spray them with adhesion promoter then 2k. dont bother with the flex additive. its a marketing gimmick that doesn't really work. if you have a good high build primer then 3-4 coats should take care of most textured plastics. you could swap out the 2k for an epoxy but you'll need more coats....usually. epoxy stays flexible forever and you usually dont have as many shrinkage issues with it. your call, either way will work


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