Help needed with primer

[millstone]

Hi
I'm carrying out a full bare metal re-spray using cellulose. I've now reached the point of having reached bare metal and I need advice.
I've purchased Tetrosyl etch primer and activator and I have high build cellulose primer.
The more advice I've read on the matter the more confused I get - some advise applying a couple of light coats of etch followed, within an hour - by the high build primer. Other advice I've read says that if you spray too soon after applying the etch, you trap acid under the primer and this leads to micro bubbles forming later in the top coat.
Can anyone with experience give me a definitive answer of how long to leave it between the etch and the high build?
Thanks

 

[the snooper]

does the etch have instructions if not ring the supplier and what is the overcoat time each paint varies, no matter how long its left the acid will still be present which is why some seam sealant manufacturers sate not to seal straight on top of acid etch

 

[steveo3002]

the etch should dry very fast ..assuming you have reasonble heat where you are spraying then yes within an hour should be fine for the high build

 

[millstone]

Feedback

Hi
Thanks for the advice. Sometimes you just don't think about the obvious!
I got a reply from Tetrosyl today and their data sheet says - one medium coat and allow 15 minutes before overcoating. They don't specifically say "must be overcoated within..." but I'm guessing a lot depends on the conditions you're spraying.
Thanks for your help.

 

[jamesmacc]

can i use normal upol filler over 2k filler primer or do i need a special filler?

 

[langy]

can i use normal upol filler over 2k filler primer or do i need a special filler?

Replied on your thread James, filler goes under prime except for Epoxy primer.