Automotive Plastic Repair - Screw Holes In Plastic
What a dreary day….It’s rained here now for 2 days solid. We’re getting whats left of hurricane Hanna. We needed it though, things were starting to dry up. It’s hard to believe we needed the rain after all we had this spring. I makes it hard doing interior repair when it’s so wet outside though, water based dyes take forever to dry and whats really hard is trying to fix a cigarette burn in cloth when the humidity is so high, virtually impossible. But I did manage to get some stuff done today, and one that I’m going to talk about today and it’s those ugly screw holes in plastic that have been left from the previous owner of the automobile.
I got into a 2007 Chevy Avalanche today at one of my dealers to clean and repair the drivers seat. When I got done with the seat and was wiping up some dirt on the carpet, I happened to look up and directly under the steering column on the dash panel were 2 screw holes in the dash from a trailer brake that had been removed, I about choked. This truck didn’t have but maybe 30k miles on it and screws had already been put in the dash, I couldn’t believe it. There has got to be a better place to mount those things, but whats done was done and now I had to fix it.
This repair is not that hard to do, and can really make a difference in the appearance of an automobile. Automotive plastic no matter where it is in the vehicle can be repaired the same way, this repair works for all screw holes and small holes as well. Now the holes say the size of pencil eraser are about the biggest you can go with this one. The holes you see where a toggle switch has been are really too big for this fix.
First and foremost is getting rid of the burr’s and raised area left from the removal of the screw. Most of the time the holes have not been pre-drilled so there’s a raised portion around the holes and burrs left from the threads of the screw as it is screwed into the plastic. To remove this and make the holes level you will need to trim this off. The way I do this is with a brand new razor blade. I use a new one because you will need a very sharp edge to cut the plastic, and not your fingers. Take your razor blade and lay it flat up against the plastic piece and push it through the plastic that is raised up, making the screw hole level with the rest of the area.
Here’s the fix. It’s a kneadable epoxy, it’s like play-do. The stuff I use is Magnum Plastic/Marine & Fiberglass Repair Epoxy Putty. But I have also seen a product on TV that is basically the same stuff, called Mighty Putty, you’ve probably seen it. It’s great, just slice a small amount off knead it into a ball to get the two parts combined, tear a small amount off then push it into the screw hole. Now leave a little bit above the hole, don’t push it all the way through, basically a little glob on top. Grab your 240 grit sandpaper and sand lightly over the glob until it’s level, finishing with a finer grit like 400 or 600. You have to kinda work fast this stuff sets up pretty quickly, 15 minutes to be exact. Inspect the hole and see if it’s all filled in, if not pinch a little more off and push into the hole, sand and inspect. If it’s level and all filled in, your done filling and now it’s time to clean the area thoroughly with your prepping solution.
Sometimes depending on the size of the screw hole and where it’s at, you may need to texture the area a little. Now I use the heavy body water based spray grain for dashes and door panels. I do it the old fashioned way with a mouth atomizer, I have a little more control with it that way. If you have a smooth piece of plastic, then no need for the texturing. Sometimes you may need to apply a surface primer to help fill in the small imperfections on the smooth plastics.
Lastly, apply your grip base then dye the area to match with your water based dyes and then topcoat with the appropriate sheen of topcoat.
When your done the screw holes in the plastic should be gone and look at the difference it makes on the appearance of the automobile, wow.
This fix is a great way to eliminate those unsightly screw holes in automotive plastic dashes and plastic trim panels. As far as that 2007 Chevy Avalanche it turned out pretty good, you could still see the areas just a little, the grain in those dashes are pretty hard to imitate, but it still looked better then two big holes sitting there staring at you on pretty much a new vehicle.
Tags: automotive, dash repair, how to repair screw holes, plastic fix, plastic repair, plastic repair epoxy putty, screw holes in plastic
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