![]() If you do cut out known bad metal, then some bracing may be required so the chassis doesn’t flex too much and permanently distort. Often times this is for a full rotisserie restoration when the doors, hood, etc are removed for a full restoration. If you are restoring a very rusty car it’s common to cut out the bad metal to expose inner cavities for the most thorough job. ![]() The major advantage of sandblasting is that it is great at removing rust, especially on hard to reach surfaces. Vapor (mixture of water and above media)ĭepending on the paint thickness and shape of the panel several different media may be needed.If you are concerned about warping large panels, then use either chemical or mechanical methods first for those large, easy to reach areas. Some blast businesses will come to you with a mobile blast rig.ĬAUTION: The high pressure abrasive media can warp large panels like hoods or doors if not operated by a skilled blaster. If you want your whole car stripped with this method, a professional outfit with quality equipment is the only way to go. Professional blasters use very high volume airflow that is difficult to achieve at home. Wire wheel on drill or 4.5″ angle grinderĬlick to here to read my undercoating removal articleĪ lot of car enthusiasts prefer to tow their project car to a professional sandblaster.Undercoating Is Tough To Remove, Try This The one limitation I have found with woven material tools, is that they don’t work very well on undercoating. This video shows me stripping my Porsche 911 in only one day. If you want to see this method in action, please click the video at the bottom of this article. Softened paint usually doesn’t create too much dust if done correctly. ![]() If the paint doesn’t come off in large balls, then it may be time to add more stripper. Soften the paint with paint stripper, scrape off the easy stuff and then use the mechanical method. One 7″ disc will strip an entire car if you don’t push too hard.Īs mentioned above in the chemical stripping section, I like to combine both methods. That is why I prefer the Makita sander at about 3000 RPM. I believe that the typical 4.5″ angle grinder is a bit too fast and it will wear the woven discs out quickly. I find that the chemical works best in areas that I poured the chemical. It’s important not to mess with the chemical once it’s applied to the surface. If you are working with fiberglass or plastic, skip to the mechanical or blasting methods below. ![]() The stripper can damage the gel coat and the epoxy resin that creates the fiberglass structure. Epoxy prime same day (follow primer directions, but most need 80 Grit DA sand).ĭo NOT use the method above for fiberglass or plastic parts.Neutralize with denatured alcohol or soap and water.Re-apply to attack multiple layers of paint.Scrape paint off with metal or plastic scraper tool.Wait 20 or more minutes after bubbling appears to stop.Brush on heavy and in one direction only.Brush chemical paint stripper onto vertical surfaces.Pour chemical paint stripper onto horizontal surfaces and cover with plastic.Best to scratch paint surface with 80 Grit Sandpaper.Apparently some states still offer stronger solutions, but you won’t find them in retail big-box stores. Their new formulation is not impressive in my opinion, but if you want to try I suggest you buy a quart or pint size first.Īlso check with your local or online automotive paint supplier for full strength paint stripper with MEK. Plan on using one or more gallons of the paint stripper above to strip an entire car.īefore the product above, I used aircraft stripper from Klean-Strip.
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