enkeivette

My rear bumper has been molded in and I want to do the same with my front bumper. The rear bumper is glass whereas the front bumper is the stock material (78, I beilieve it's urethane). First of all, is it even possible to mold in two different materials? If so, should I use fiberglass resin? Bondo? Someone clue me in.

My rear bumper has small cracks in the paint where is was molded in that I will have to repair. Does anyone know how to repair these to prevent the new paint from cracking?

Bruce C

I'm in the middle of molding in both my bumpers on my 74 using fiberglass bumpers. (I don't think you can do it with urethane) I'm using stainless steel fasteners and large panel adhesive epoxy that has a 70 minute working time to attach them. Seems to be working so far. I'm making sure the bondo is a little thicker over the joint.
I don't know what to do about your cracks, other than check how your bumper was bonded on. If it's not a 100% firm joint, it's going to flex and crack so I'd redo it. I'd be afraid of putting in flexible filler and a flex agent in the paint, it may not look right a few years down the road.
Good luck...

rexx78

Yup, first of all, you need both fiberglass bumpers.

After you bond the bumper to the body, you "V" groove the joint and fill with kitty hair. You can use a polyester filler on top of the kitty hair to final fill.