plastic inner rad airflow duct restore

Looking for some mechanical advice or sharing your own tales of the workshop wonder.

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bille7
Member
Posts: 22
Joined: Sat Mar 03, 2018 3:10 pm


This thing was pretty badly scratched and oxidized but had no structural damage. None of the wipe on plastic renewal products put so much as a dent in the finish so I ended up using a heat gun to burn away the UV damage. I believe someone
that is a pro at doing this sort of thing could have maybe used the same heat gun to actually remove the scratches, too, but
since the plastic is a bit thin I worried about ruining the thing by overheating it. I ended up sanding out the scratches, finishing
up with #2000 grit paper. Of course the sanded areas had turned white and going over these with the gun again didn't seem to help much so I ended up refining the piece with 3 coats of Eastwood Plastic Resurfacer. It looks new again but I doubt if
products such as "Back to Black" can successfully be used on it.
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RC30FREAK
Member
Posts: 112
Joined: Thu May 17, 2012 12:13 am


Looks pretty good so far what you have done , nice job ! I found a trick from one of the VFR Forums . You take some paint thinner and some boiled linseed oil (DON'T try to boil it yourself...it comes already that way in the bottle !) . I think the dilution rate is 2 parts to 1 part , have to remember which way. Anyways it smells good and you rub it on like Armor-All . You let it soak in a little bit , then wipe off the excess . IT goes into the plastic and rehydrates it . I tried the blow dryer method ....saw some crazy dude on YouTube doing it . ..... Even outside it produces such toxic fumes you'll want to gag ! I actually used a heat gun like he did ...... You also take the chance that you warp your piece . Your method seems pretty solid though ! My method also works quote well for controls and the master cylinders to bring back the black to fairly shiny.......
bille7
Member
Posts: 22
Joined: Sat Mar 03, 2018 3:10 pm


Controls? oooOOoooo. Mine are faded quite badly but they're made of metal. You're saying you can bring those back?
thanks-
bll
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