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Jul 15, 2016 23:38:49 GMT
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I've got some previously textured (hard) plastic bumper inserts all sanded smooth ready for spraying body colour but want to know how they should be cleaned prior to priming. I've since read that apparently you should pre clean the parts prior to sanding otherwise you push any surface oils and silicones into the plastic when sanding  Trust me to find that out afterwards!! Can anyone recommend a good cleaner that won't effect the plastic but will remove any contaminates before I apply the plastic primer? Thanks in advance, Richard. |
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You can get a designated plastic degreaser from paint suppliers, it doesn't soften the plastic like many other degreasers or fill the part with static
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g40jon
Posted a lot
Posts: 2,569
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Jul 16, 2016 23:36:38 GMT
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if you want a cheap method, get some washing up liquid, put it on neat, work in with a brush, wash off with water and dry. Used this method many times with good results
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Jul 17, 2016 15:32:53 GMT
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normal panel wipe will work, use lots of clean cloths and wipe it dry rather than let it dry
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91 golf g60, 89 golf 16v , 88 polo breadvan
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bortaf
Posted a lot
Posts: 4,549
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Jul 17, 2016 15:38:56 GMT
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Maybe i've been doing it wrong for the last 20 years but i just use brake cleaner, wipe them over, then red oxide or plastic primer, then top coat ??
As for the oils bit never heard that before, you heat plastic to bring the oils back to the surface (to re blacken faded bumers ect) but pushing oils back into the plastic by rubbing it down sounds like pub talk to me TBH.
(nervosly looking about for somone to back me up)
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R.I.P photobucket
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Jul 18, 2016 21:30:01 GMT
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Thanks for the replies guys.
I've got normal panel wipe which like brake cleaner dissolves very quickly. I wasn't sure if this would damage the plastic or not, I might give it a quick try on the back of one insert to see if its ok. I like the sound of using washing up liquid, mainly cos its cheap and we've got some!
Thanks for all your suggestions.
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don't worry , panel wipe wont touch 99.9% of bumpers n stuff , it dries too quick - ive worked in bodyshops for years and never had a issue
i would make an effort to go the extra mile and clean it a few times , each new rags one wet and a dry one to instantly dry off the residue
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91 golf g60, 89 golf 16v , 88 polo breadvan
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Jul 19, 2016 20:24:05 GMT
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don't worry , panel wipe wont touch 99.9% of bumpers n stuff , it dries too quick - ive worked in bodyshops for years and never had a issue i would make an effort to go the extra mile and clean it a few times , each new rags one wet and a dry one to instantly dry off the residue Thanks Steve, I'll give that a go when I get a chance. Hopefully you were happy with the door mirror you bought from me a couple of months back? Cheers, Richard. |
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Jul 20, 2016 17:12:23 GMT
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id have sworn i messaged you back...yes very much so , as described and well packed thank you very much
apologys if i didnt send a thank you , i thought i had
any paintwork questions feel free to message if youre stuck , ive been in the trade since school
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91 golf g60, 89 golf 16v , 88 polo breadvan
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Trust me to find that out afterwards!!
