plastic repair

so, as im pulling the instrument panel out of my 64 el-camino last night, i found that its cracked, and that the cluster is held in with cardboard wedges due to the plastic tabs being boken off the back. also, the cups that the switches mount to are either cracked, or broken completely out. i "think" i have all the pieces. what i need to do is glue it all back together. that way i can have a complete piect to cut up and modify. this is not a resto. its a make it sound enough to reuse and look decent.

what i have thought about: hot glue: doesnt deal with temperature changes well, and may or may not bond in a butt joint application. wetherstrip adhesive: works great on most surfaces, but im not sure about the butt joint/expansion contraction capability. hharbor freight soldering style plastic welder: i have it, but dont know how to use it well enough to do anything ther than melt the crap outta stuff and pray it holds. epoxy: dont now enough about it to select one of the hundreds of options superglue: soemtimes it melts plastics. other than that, id be worried about bond strength. modeling lue: i dont knopw if it would work for this, as i have no idea what kind of plastic it is, other than plastic. im planning on reinforcing my radio and extra gauge holes with some 1/8 lexan as well, just to distribute the weight better fto the thing, brittle plastic.

what would GRM use, and why? im looking for experience, suggestions, and locally/readilly availible stuff.

I've not used it for cars, but when building model cars I've used Ambroid Proweld. It's a glue that has the consistency of water. You hold the parts together and put a few drops on it. Hold for 10 seconds and the glue works its way into the joint, melting the plastic at the break. The plastic solidifies as one part. It's good for Styrene, Butyrate, ABS and Acrylic.

I think the key is finding out what kind of plastic it is. That's not necessarily going to be easy, but it is pretty important.

All you need is this stuff. Works on 90% of the plastics out there and metals too. Smells nasty when mixing... like fish guts mixed with solvent that curys your nose hairs but it works great!

http://www.loctiteproducts.com/p/epxy_plstc_s/overview/Loctite-Epoxy-Plastic-Bonder.htm