Interior plastic repair

hardebeck

Member
Jun 29, 2023
11
6
Phoenix, MD
Hi all,
In the process of sorting out a 92 D1 and about to undertake repair of a badly cracked center console. I tried a practice run by repairing the cracked rear side pocket but I wanted to check in first to see if this is a solved problem before I do the console. I’m not sure what the best choice is for this plastic so I did the drywall joint technique; JB Weld along the crack, then laid some fiberglass mesh drywall tape in the epoxy and then used a plastic drywall knife to bed it and flatten everything out. Painters tape on the front side to hold everything true and keep the JB Weld from squeezing through. I think it turned out ok. The long crack isn’t completely flat but I could have done a better job with the setup to hold it in place while it cured. Seems to be pretty strong and the fiberglass tape should help strengthen and reinforce. I think it makes sense to do this in other areas that haven’t cracked yet but are likely, such as corners and bends.

Anyone got a better technique or recommendation for adhesive? Any ideas for touch up paint that matches Sonar Blue?
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kris812

Well-known member
Jun 11, 2014
267
94
Tucson AZ
I have 'superglued' plastics like the front grill that has held together for many years. It actually melts the 2 plastic halves together. But these were Much smaller cracks and much thicker plastic.

I think you are onto something with fiberglass backing. I would make all the fiberglass touch on the backside, and sand it first, so it stays on stronger and longer. You could then plastic-weld the front side flat and smooth, then melt texture back into it.

Or just use what you have as a Base. Make it good and solid, and then cover in thin carpet or something for good looks.
 
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