Second that on the 3M, look for 77 contact adhesive. It comes in a spray can and you can find at most hardware stores. Its about the best you can get other than special trade only and its cheap and it doesn't let go. If you adjust the spray pattern light enough when you do the fabric it won't hurt it. Go too heavy and you get bleed through in patches on the fabric. I'll be nice and not mention mine was the first ML I've seen which didn't have saggy A's and mine are leather, but I won't mention that...
Same problem on mine. Cracked on drivers side and the clear coat is toast on the passenger side. Have to sand down then spray black base and then some clear. Mine age not loose but I would use butyl or urethane adhesive. Same stuff you use to bond windshields in. Not that bad for price and its flexible when cured and you'd probably end up ripping the roof off trying to get it back off Does anyone know what these are made off? Was thinking a bumper repair kit to fix my crack. Problem is it has to match the plastic to work.
That was me about the urethane. Just happen to have a tube here but mine are tight.
If those covers are plastic then finding the proper bumper repair kit really would fix it. No idea what replacement cost is though. The bumper kit which uses a harder version of that urethane and reinforcement fabric is about $30 then you need a differ ant type to do the paint side. That one is also $30 but its more like a flexible epoxy so you can sand it.
If someone has an old one they are willing to part with I wouldn't mind trying to figure out what works.
Replacement covers are about $80 from online MB dealers so it probably isn't worth trying to fix them. I bought a replacement for my cracked one but haven't gotten around to installing it yet. I'll give the urethane a go when I get a chance.
I have been using Black shoe polish on the D pillars, also the black door handles.
It works amazing. I read it somewhere here years ago. I just sanded the D pillars to there flat black finish, no scratches left. The shoe polish gives them a sharper black luster making them look painted.
We used that to bond pieces of aluminium sheet together. When you tried to pull them apart after the aluminum sheet would actually rip. If you can get them new for that its not much more than both repair kits.
Think I may have a tin of kiwi black somewhere have to try that. How often do you apply or how long does it last? Used it on boots before but not a car.
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