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58Bonne's 1958 Bonneville

2021 September
of the Month

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69 Firebird Convertible build

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18 minutes ago, 64 kiwi boni said:

lidpainter, did you use  a mig? gas or flux core wire ?

and once welded, did you grind the weld or buff it with a wire wheel ?

Solid wire with argon mix. Ground it down, epoxy primed. 

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wont be the weld then ! got to be the primer adhesion to the surface 

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4 hours ago, 64 kiwi boni said:

wont be the weld then ! got to be the primer adhesion to the surface 

It’s discouraging whatever it is. Not the end of the world and I still have a lot of work I can do while I try to figure it out. I still have about a quart and a half of paint left so it’s no big deal I guess.

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If it isn't dissimilar metals, contaminated welds, then could you be using primer, sealer, or paint that don't play nice with each other (hard to believe but not impossible)?

I am think of those 90s GM vehicles - especially Grand Prixes, Grand Ams, and Tahoes and Yukons that the paint literally blistered off over time because GM used a chemically incompatible primer vs paint. Only way to fix it was to literally grind the paint off to bare metal and re-primer and paint the car.

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