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1968 Olds Cutlass Adaptor Defroster Repair

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Old August 27th, 2017, 09:38 PM
  #1  
1968 Olds Cutlass S
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1968 Olds Cutlass Adaptor Defroster Repair

Any thoughts on the best way to repair the broken tab? I don't have the piece that broke off. Thanks.
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Old August 28th, 2017, 07:52 AM
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I've had good luck making tabs out of PC7 epoxy putty. If it needs to have some strength, I embed a piece of wire in the original piece and mold the epoxy around the wire. Before it gets hard, you can trim with an X-acto to get the shape.
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Old August 28th, 2017, 08:20 AM
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I just went through this with the ducting for my 67 Delta. I repaired it with two-part epoxy for plastic and fiberglass mat. Just be sure to rough up the original part and degrease with precleaner prior to bonding.
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Old August 28th, 2017, 06:16 PM
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1968 Olds Cutlass S
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Originally Posted by Indy_68_S
I've had good luck making tabs out of PC7 epoxy putty. If it needs to have some strength, I embed a piece of wire in the original piece and mold the epoxy around the wire. Before it gets hard, you can trim with an X-acto to get the shape.
Thanks Tom. I have some PC7 left over from restoring my steering wheel.

Originally Posted by joe_padavano
I just went through this with the ducting for my 67 Delta. I repaired it with two-part epoxy for plastic and fiberglass mat. Just be sure to rough up the original part and degrease with precleaner prior to bonding.
Thanks Joe. Did you use just the two-part epoxy? Or did you also use the fiberglass to fix your broken tab?
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Old August 29th, 2017, 06:44 AM
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Originally Posted by jdana24
Thanks Joe. Did you use just the two-part epoxy? Or did you also use the fiberglass to fix your broken tab?
From above:

Originally Posted by joe_padavano
I repaired it with two-part epoxy for plastic and fiberglass mat.
I basically wetted the mat with the epoxy and laid it up like you would with fiberglass resin. I used the epoxy for plastic instead of the resin because 1) it bonds better to the base plastic, and 2) it's more flexible than the fiberglass resin.
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Old August 29th, 2017, 10:48 AM
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1968 Olds Cutlass S
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Originally Posted by joe_padavano
I just went through this with the ducting for my 67 Delta. I repaired it with two-part epoxy for plastic and fiberglass mat. Just be sure to rough up the original part and degrease with precleaner prior to bonding.
Originally Posted by joe_padavano
From above:



I basically wetted the mat with the epoxy and laid it up like you would with fiberglass resin. I used the epoxy for plastic instead of the resin because 1) it bonds better to the base plastic, and 2) it's more flexible than the fiberglass resin.
Thanks Joe.
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