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88 hatchback
08-14-2020, 04:29 AM
Just wondering - does anyone have any insight to a good product to use to fill in cosmetic damage on a fox bumper?

After doing a LOT of searching - I'm not able to find a replacement for mine - and I'd like to see if I can at least do some of the prep work before it gets primed and painted (saving myself some labor hours in the process)

My 84 LX bumper has some pretty good nicks and dings in the belt line in the front - as well as the top half of the grill is cracked and separated.

Gabe
08-14-2020, 09:38 AM
Just wondering - does anyone have any insight to a good product to use to fill in cosmetic damage on a fox bumper?

After doing a LOT of searching - I'm not able to find a replacement for mine - and I'd like to see if I can at least do some of the prep work before it gets primed and painted (saving myself some labor hours in the process)

My 84 LX bumper has some pretty good nicks and dings in the belt line in the front - as well as the top half of the grill is cracked and separated.

I used Evercoat 870 Vette panel adhesive and filler. Excellent product

m_owing
08-15-2020, 01:39 AM
bondo hair and bondo glass are resin with pieces of fibreglass mixed in. One of those might work for the crack depending on how bad. Sanding and regular body filler might work for the nicks and dings you describe.

hammerhead
08-15-2020, 09:11 AM
There is a thing called plastic welding - I personally have never done it - at one time there was people around that could do this maybe try to locate a plastic welder at a body shop that could fix the crack - at Napa and places alike (maybe Carquest) or other body work suppliers there is a 2 part resin in a tube, that mixes like apoxy designed to work on plastic bumper covers - I've also had luck with thin coats of spot putty (very thing for small blemishes) - I will post the name of the resin later just slips my mind now....those plastic bumper covers are tough to work with best of luck!

88 hatchback
08-15-2020, 11:51 PM
I used Evercoat 870 Vette panel adhesive and filler. Excellent product

I did pick some of this up - I'm going to give it a shot on monday - I'll let you know how it turns out.


bondo hair and bondo glass are resin with pieces of fibreglass mixed in. One of those might work for the crack depending on how bad. Sanding and regular body filler might work for the nicks and dings you describe.

I'm hesitant on using any "hard" fillers on the front bumper - Urethane tends to have a decent amount of flex to it - so I'm not sure if they would really adhere over longer periods of time.


There is a thing called plastic welding - I personally have never done it - at one time there was people around that could do this maybe try to locate a plastic welder at a body shop that could fix the crack - at Napa and places alike (maybe Carquest) or other body work suppliers there is a 2 part resin in a tube, that mixes like apoxy designed to work on plastic bumper covers - I've also had luck with thin coats of spot putty (very thing for small blemishes) - I will post the name of the resin later just slips my mind now....those plastic bumper covers are tough to work with best of luck!

I'm thinking I'm going to look into this as well - I've got some minor grill separation that I need to address as well. I'm thinking plastic welding in addition to having some hot metal driven in for reinforcement.

Old Fart
08-16-2020, 10:05 AM
Just saw this on Facebook. also available on Amazon.


https://www.facebook.com/TopShelfAmericanWelding/videos/294308131862118/

https://www.amazon.ca/dp/B07SD7XR4P/?coliid=I1IFV1I41W1PA2&colid=267U8X499LDOG&psc=1&ref_=lv_ov_lig_dp_it

m_owing
08-16-2020, 03:34 PM
I'm hesitant on using any "hard" fillers on the front bumper - Urethane tends to have a decent amount of flex to it - so I'm not sure if they would really adhere over longer periods of time.

I'm thinking I'm going to look into this as well - I've got some minor grill separation that I need to address as well. I'm thinking plastic welding in addition to having some hot metal driven in for reinforcement.

Are the bumpers urethane? Bondo glass uses a polyester resin. It's tricky, like you mentioned, you want flex but also adherence. You can rough up the surface to give the product more to bond with. If your grille is cracked and separated, and you want to 'push' it back together then it seems like you have a good plan with the plastic weld or staples. I used bondo hair or glass on my cracked spoiler. I wasn't clamping it together though, just filling in the cracks. It was cheap, easy and effective.