How should I remove this paint from my door panels? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Gigem · 12-31-2020, 09:14 PM

Some previous owner/asshat put some paint on these original 1972 GMC Sierra Grande door panels. How best to remove? Goof Off? Acetone? Mineral spirits?

57taskforce · 01-01-2021, 03:10 AM

A Pressure washer will likely do it. Mine had spray adhesive on them... before and after.

Luvlegs · 01-01-2021, 09:22 AM

I've used handfuls of sand and literally rubbed plastic auto parts that were detailed (to get into textured areas). I painted them afterwards but there was little "scratching" visible. Not sure it would work if you we're trying to get paint off and then leave without a finish.

k29349 · 01-01-2021, 09:27 AM

Rub on a nice coating of brake fluid and then pressure wash the next day.

MAC71Cheyenne · 01-01-2021, 09:30 AM

Mineral spirits and acetone will eat the plastic.
Least aggressive first then work up. I would try Dawn dish soap with a fairly stiff brush first the denatured alcohol if the Dawn doesn't cut it. Depending on how clean the prior prep and paint used it may just scrub off.

**StingRay** · 01-01-2021, 09:40 PM

Those door panels are polypropylene. There are few solvents that will even touch the stuff. White panels I media blast. It'll take off all of the oxidized plastic along with the paint and leave a very nice panel. It'll be a flat finish though.

MAC71Cheyenne · 01-01-2021, 10:21 PM

Now why didn't I think of that?

**StingRay** · 01-02-2021, 12:45 AM

Polypropylene is unbelievably tough stuff. Same stuff modern front bumpers are made of. it's actually tough to stick any kind of paint to. Pressure washing, paint strippers and the like will wok fine. Pressure washing might get a lot of that oxidized stuff off too. Blasting works great and when painting again it'll have a little tooth into the plastic. Use low pressure and a small blaster for the job. Not trying to kill the panel with an industrial pressure blaster. An adhesion promoter should be used before paint and possibly a flame treatment of the panel as well

72bowtiestepper · 01-02-2021, 11:11 AM

Thanks for the ideas guys....I am about to refinish the plastic door panels on my 72....Great timing !

Gigem · 01-02-2021, 05:35 PM

The good folks over at the Garage Journal suggested EZ Off. That, followed up with a bath from my low powered electric pressure washer did a pretty good job.

Gigem · 02-07-2021, 05:13 PM

Today I am repainting these door panels. Did some research and got all of the SEM products needed to do the job. SEM Soap, SEM Plastic and Leather Prep, SEM Plastic Adhesion Promoter and 2 cans of SEM Color Coat - Super White.

This is after doing all the prep and shooting maybe 2-3 light coats of color.

I am going to shoot several more coats. Someone on here said that they used a can per panel which seemed crazy but now not so crazy. After prep, these panels drink up this paint!

These won't be perfect since there were several pretty deep scratches in the plastic, but I think they will be good enough for my jalopy.

I'll post more pictures of the final product tomorrow.

best view · 02-07-2021, 09:23 PM

,Those came out nice good work

Gigem · 02-07-2021, 09:29 PM

Here are the door panels finished and put back together with the trim and new inserts. I realize now that I need to do the arm rests too. That will be tomorrow's project.

**KSCHEVYUP** · 02-08-2021, 09:54 AM

Thanks for sharing this project with everyone.
I will be doing my door panels sometime this year
Ron

**FL71C10** · 02-08-2021, 10:48 AM

Those look great. Nice job!

72bowtiestepper · 02-08-2021, 11:04 AM

Nice work Gigem...lookin' good !

CG · 02-08-2021, 10:25 PM

They look good! But ... after reading the thread and going back to the first post it made me chuckle.

40 years from now your truck will be owned by someone that isn't born yet. Maybe he will sign up for this board (you never know it might still be around) and his first post will start out with a picture and ...

Some previous owner/asshat put some paint on these... LOL!

Gigem · 02-08-2021, 11:05 PM

Quote:

Originally Posted by CG

They look good! But ... after reading the thread and going back to the first post it made me chuckle.

40 years from now your truck will be owned by someone that isn't born yet. Maybe he will sign up for this board (you never know it might still be around) and his first post will start out with a picture and ...

Some previous owner/asshat put some paint on these... LOL!

**landarts** · 02-10-2021, 06:04 PM

I bought these for $20 dollars from a guy on Marketplace. When I went to pick them up they were ugly and covered with black spray paint and not a very good job. Bought them to see if I could revive them and turn them into a useful set of door panels.

I bought a small jug of Orange Citrus strip from Home Depot and brushed it on with a chip brush and covered them with some painters plastic for about an hour. Walked them outside of the garage into the rocks and sprayed it off with a power washer. Then sprayed them down with some Simple Green and power washed again. Just about like new.

12-31-2020, 09:14 PM	#1
Gigem Registered User Join Date: Feb 2012 Location: Lakeway, TX Posts: 335	How should I remove this paint from my door panels? Some previous owner/asshat put some paint on these original 1972 GMC Sierra Grande door panels. How best to remove? Goof Off? Acetone? Mineral spirits? Attached Images __________________ 1972 GMC Sierra Grande (current truck) 1980 Chevy Stepside (gone) 1987 Chevy Blazer (gone) 1972 Chevelle SS Convertible (gone) 1973 Chevy Corvette (gone) 1967 Chevy Camaro (STOLEN!)

01-01-2021, 03:10 AM	#2
57taskforce All about them K’s Join Date: Jun 2014 Location: Land of Entrapment Posts: 6,504	Re: How should I remove this paint from my door panels? A Pressure washer will likely do it. Mine had spray adhesive on them... before and after. Attached Images __________________ Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne: 5” lift, 35’s, front dana 60 blah blah blah… http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB: 4” lift 33”s… in a million pieces http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 35x12.5x20’s

01-01-2021, 09:22 AM	#3
Luvlegs Registered User Join Date: Sep 2005 Location: Smith Mountain Lake Virginia Posts: 1,537	Re: How should I remove this paint from my door panels? I've used handfuls of sand and literally rubbed plastic auto parts that were detailed (to get into textured areas). I painted them afterwards but there was little "scratching" visible. Not sure it would work if you we're trying to get paint off and then leave without a finish. __________________ "A cat will almost always blink when hit between the eyes with a ball peen hammer" (you don't always have to state the obvious) Wear your PPE! You can eat with false teeth but you can't see with a false eye. 1959 Studebaker Silverhawk 350/400 1972 C10 L6 3OTT 2005 F350 - Built - whew!

01-01-2021, 09:27 AM	#4
k29349 Registered User Join Date: Nov 2013 Location: Inman S.C. Posts: 67	Re: How should I remove this paint from my door panels? Rub on a nice coating of brake fluid and then pressure wash the next day.

01-01-2021, 09:30 AM	#5
MAC71Cheyenne Registered User Join Date: Aug 2020 Location: Mount Pleasant Iowa Posts: 303	Re: How should I remove this paint from my door panels? Mineral spirits and acetone will eat the plastic. Least aggressive first then work up. I would try Dawn dish soap with a fairly stiff brush first the denatured alcohol if the Dawn doesn't cut it. Depending on how clean the prior prep and paint used it may just scrub off.

01-01-2021, 09:40 PM	#6
StingRay Senior Member Join Date: Mar 2000 Location: Saskatoon,SK,Canada Posts: 2,476	Re: How should I remove this paint from my door panels? Those door panels are polypropylene. There are few solvents that will even touch the stuff. White panels I media blast. It'll take off all of the oxidized plastic along with the paint and leave a very nice panel. It'll be a flat finish though. __________________ Saskatoon, Saskatchewan Canada

01-01-2021, 10:21 PM	#7
MAC71Cheyenne Registered User Join Date: Aug 2020 Location: Mount Pleasant Iowa Posts: 303	Re: How should I remove this paint from my door panels? Now why didn't I think of that?

01-02-2021, 12:45 AM	#8
StingRay Senior Member Join Date: Mar 2000 Location: Saskatoon,SK,Canada Posts: 2,476	Re: How should I remove this paint from my door panels? Polypropylene is unbelievably tough stuff. Same stuff modern front bumpers are made of. it's actually tough to stick any kind of paint to. Pressure washing, paint strippers and the like will wok fine. Pressure washing might get a lot of that oxidized stuff off too. Blasting works great and when painting again it'll have a little tooth into the plastic. Use low pressure and a small blaster for the job. Not trying to kill the panel with an industrial pressure blaster. An adhesion promoter should be used before paint and possibly a flame treatment of the panel as well __________________ Saskatoon, Saskatchewan Canada

01-02-2021, 11:11 AM	#9
72bowtiestepper Registered User Join Date: Feb 2013 Location: Northwest NJ Posts: 684	Re: How should I remove this paint from my door panels? Thanks for the ideas guys....I am about to refinish the plastic door panels on my 72....Great timing !

01-02-2021, 05:35 PM	#10
Gigem Registered User Join Date: Feb 2012 Location: Lakeway, TX Posts: 335	Re: How should I remove this paint from my door panels? The good folks over at the Garage Journal suggested EZ Off. That, followed up with a bath from my low powered electric pressure washer did a pretty good job. Attached Images __________________ 1972 GMC Sierra Grande (current truck) 1980 Chevy Stepside (gone) 1987 Chevy Blazer (gone) 1972 Chevelle SS Convertible (gone) 1973 Chevy Corvette (gone) 1967 Chevy Camaro (STOLEN!)

02-07-2021, 05:13 PM	#11
Gigem Registered User Join Date: Feb 2012 Location: Lakeway, TX Posts: 335	Re: How should I remove this paint from my door panels? Today I am repainting these door panels. Did some research and got all of the SEM products needed to do the job. SEM Soap, SEM Plastic and Leather Prep, SEM Plastic Adhesion Promoter and 2 cans of SEM Color Coat - Super White. This is after doing all the prep and shooting maybe 2-3 light coats of color. I am going to shoot several more coats. Someone on here said that they used a can per panel which seemed crazy but now not so crazy. After prep, these panels drink up this paint! These won't be perfect since there were several pretty deep scratches in the plastic, but I think they will be good enough for my jalopy. I'll post more pictures of the final product tomorrow. Attached Images __________________ 1972 GMC Sierra Grande (current truck) 1980 Chevy Stepside (gone) 1987 Chevy Blazer (gone) 1972 Chevelle SS Convertible (gone) 1973 Chevy Corvette (gone) 1967 Chevy Camaro (STOLEN!)

02-07-2021, 09:23 PM	#12
best view Registered User Join Date: Apr 2009 Location: newbury new hampsire Posts: 2,164	Re: How should I remove this paint from my door panels? ,Those came out nice good work

02-07-2021, 09:29 PM	#13
Gigem Registered User Join Date: Feb 2012 Location: Lakeway, TX Posts: 335	Re: How should I remove this paint from my door panels? Here are the door panels finished and put back together with the trim and new inserts. I realize now that I need to do the arm rests too. That will be tomorrow's project. Attached Images __________________ 1972 GMC Sierra Grande (current truck) 1980 Chevy Stepside (gone) 1987 Chevy Blazer (gone) 1972 Chevelle SS Convertible (gone) 1973 Chevy Corvette (gone) 1967 Chevy Camaro (STOLEN!)

02-08-2021, 09:54 AM	#14
KSCHEVYUP Senior Member Join Date: Nov 2003 Location: NEAR MARYSVILLE,KANSAS 66508 Posts: 471	Re: How should I remove this paint from my door panels? Thanks for sharing this project with everyone. I will be doing my door panels sometime this year Ron __________________ 1972 C30 Cheyenne Super 1971 C10 (Parts truck)

02-08-2021, 10:48 AM	#15
FL71C10 Senior Member Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,509	Re: How should I remove this paint from my door panels? Those look great. Nice job! __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.



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02-08-2021, 11:04 AM	#16
72bowtiestepper Registered User Join Date: Feb 2013 Location: Northwest NJ Posts: 684	Re: How should I remove this paint from my door panels? Nice work Gigem...lookin' good !

02-08-2021, 10:25 PM	#17
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 20,035	Re: How should I remove this paint from my door panels? They look good! But ... after reading the thread and going back to the first post it made me chuckle. 40 years from now your truck will be owned by someone that isn't born yet. Maybe he will sign up for this board (you never know it might still be around) and his first post will start out with a picture and ... Some previous owner/asshat put some paint on these... LOL! __________________ … … … … … … … … ... … … … … … … … … … … …

02-10-2021, 06:04 PM	#19
landarts landarts Join Date: May 2005 Location: Star, Idaho Posts: 1,420	Re: How should I remove this paint from my door panels? I bought these for $20 dollars from a guy on Marketplace. When I went to pick them up they were ugly and covered with black spray paint and not a very good job. Bought them to see if I could revive them and turn them into a useful set of door panels. I bought a small jug of Orange Citrus strip from Home Depot and brushed it on with a chip brush and covered them with some painters plastic for about an hour. Walked them outside of the garage into the rocks and sprayed it off with a power washer. Then sprayed them down with some Simple Green and power washed again. Just about like new. Attached Images __________________ Super Cheyenne aka the "Devil Cowboy" 71 K20 Idaho Edition 69 K10 from the Field 68 Second Chance Fix and Sale 72 GMC 3/4 ton 4x4 K2500 The "Fixrupr" build thread 72 Cheyenne 1/2 ton " FIXRUPR " - daily driver 67 C20 all original paint 71 K20 Custom 4x4 (Idaho Edition) 72 K20 GMC Super Custom 4x4 72 K20 Custom Deluxe 4x4 69 K10 Custom package 4x4 (69 K10 from the field) 72 K10 Custom 71 K10 Custom 72 K20 Custom Deluxe 4x4 72 K20 Crew Cab Project 71 GMC Jimmy CST 72 Blazer 70 Blazer

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