Running board on my Expedition cracked along the fold line when I turned into a stump. A glue to prevent further damage? Dunno what kind of plastic, black, very hard and rigid.
You can try liquid model cement, but even if it works, you'll have a crack that's visible. If your truck is used in a work way, I would think that isn't a problem, but if it's nice and straight, wouldn't a replacement look better?
I keep them mechanically straight, but like me, they become cosmetically challenged after 100K or so -
Excellent. Since I already have the black ABS cement AND a can of acetone, I'll have at it. Was thinkin clear nail polish since it works so well on other stuff. Thanks, all.
On the underside of the plastic there will be a plastic identifying symbol, Once you know what kind of plastic it is, you can use the right glue, some plastic will not glue well with anything, some plastics like ABS glue very well using ABS glue. https://www.gluegun.com/blogs/adhesive-reviews/your-complete-guide-to-bonding-plastics-plastic-glue
The grill on my '70 came to me in at least 5 pieces of brittle ABS and bailing wire. Using the acetone, ABS cement and fine wire mesh got the grill back into 1 pretty acceptable piece. The missing bits were scavenged from ABS trim from (of all things) a Land Rover, cut to size and re-bonded to the grill using the acetone to prime or soften the parts, ABS cement from Homley Depot and the joints were reinforced with a very fine stainless wire mess pressed into the wet cement kind of like dry wall tape. All this can be sanded and painted with good results. I have since restored a '70 Barracuda grill that was in worse shape than the Ranchero with acceptable results. Takes time to dry, but it is pretty sturdy once done. Do one spot at a time and let it sit overnight and make your next move.
The black ABS cement works, and is hardly visible. Also carefully filled in cracks which were not all the way thru. Thanks to all of you.
