Weld Thru Primer Question

[drobertson]

So currently I have been replacing sone sheetmetal on my 1973 Charger. Using advice from others, when in making a "pable sandwich" I strip down the e-coat off the areas to be welded. I have been using the Napa brand TEC-nique zinc weld thru primer with great success.

However, I do have one question. Thsee come in an 18 oz. can, and I'll never use that much in one day, let along a week. After the can has been shaken up (like the rattle ball has broken loose and mixed it up) does it expire? Or can I keep on using it the following days? Thanks.

 

[flypaper]

keep using it until it dies.
the only cans with a quick expiration are the epoxy primer ones.
you have to activate the 2 parts
thru a pin on the bottom of the can
and use it up in less then 24 hrs

 

[drobertson]

keep using it until it dies.
the only cans with a quick expiration are the epoxy primer ones.
you have to activate the 2 parts
thru a pin on the bottom of the can
and use it up in less then 24 hrs

Well darn I didn't even know that rattle can epoxy existed. Ok, thanks for the info about the weld thru stuff.

 

[desotoman]

be sure to store the can upside down

 

[khryslerkid]

keep using it until it dies.
the only cans with a quick expiration are the epoxy primer ones.
you have to activate the 2 parts
thru a pin on the bottom of the can
and use it up in less then 24 hrs

A little trick about two part epoxies, after mixing you can lengthen the life of the leftover by placing it in your refrigerator. Might get another day out of it.

 

[drobertson]

How good is the rattle can epoxy compared to the real deal? When I get close to painting the car, I'll count my pennies and buy some actual spray guns and an 80 gal. compressor. But while I have the quarter panel off I might as well epoxy the inner structure.