repairing a grill

[Yellow]

Whats the best adhesive/glue to use when repairing plastic grills, reattching tabs, replacing fins, etc?

Also have a crack on a fiberglass bumper, i' tried several things, but it keeps cracking again, what the best glue to use on it?

[bOb shingler]

try "JB" weld. does the crack keep getting longer?

[Yellow]

No, not longer, just doesn't seem to bond well enough.

Roger

[75Dart440]

I've repaired a number of those old Mopar grilles with an airless plastic welder.  The plastic on the those grilles actually welds pretty good compared to some of the stuff used on newer cars.  Basically all the airless welder is, is a high-wattage, variable temperature, electric soldering iron with a special bronze shoe on the end.

Clean the paint off the area to repair and go get a cheap radio shack soldering iron (the old pencil point type).  If you have an assortment of old Mopar grilles that can donate some plastic, snip a piece off of the donor grille to be used as the filler material (should be same type of plastic), clean off the paint, and start melting some into the crack a little at a time.  Just don't burn the plastic.  This is where the actual plastic welder unit comes into play.....as it has an infinitely adjustable heat range.

You will have to clean off any old glue from previous attempts though.....as it will prevent the plastic from melting together properly.

Here is a link to the plastic welder from Urethane Supply, that I use:

http://www.arizonatools.com/tools/plastic-welders-rods-and-plastic-adhesives/detail/URE5600HT/?gclid=CPr0pIS_-I8CFRJgWAodolvWMg

[wild383]

To repair my grille I used tabs from a donor grille. Clean the area well of any paint and use this stuff. it welds/melts the parts together. As for the fiberglass bumper, a more traditional repair method will work better. Grinding the crack from both sides to create a v shaped channel, then use something like tigerhair to fill in. Maybe even place a small patch of fiberglass mat or cloth with the proper resin/hardener on the backside to add more support. Willie

[Yellow]

Hey, thanks for the replys/help, appreciate it.

Roger

[75Dart440]

Also have a crack on a fiberglass bumper, i' tried several things, but it keeps cracking again, what the best glue to use on it?

The best way to keep the bumper from cracking out again, is to re-inforce it from the rear with more fiberglass matt, and resin, building it up a layer at a time.  I repaired mine (after I backed into my wife's car while testing the brakes on the Duster), by orienting the strands on the fiberglass matt in different directions.  This would also be a great time to laminate some mounting brackets into the rear of the bumper as well!

[demon340v]

i went to autozone spent 4 bucks and got a plastic welding it's a nedle type thing that ahs the hardner and the product and when you push it out they both come out to mix equally and it really works good. Used JB Weld on the back where you can't see so i did nto care about looks there. but i must say the grilel turned out awesome!

I will be posting pics in my other thread soon

[Duster Five-O]

Superglue and baking soda on the grille.