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Why does nobody warn you about mixing primer brands on a cold day
I was spraying a bumper in my shop near Boise last Thursday when it was 41 degrees in the booth, and the primer started flashing weird on me. I had grabbed a different brand of primer than I usually use because my normal supplier was out, and it orange peeled so bad I had to strip the whole thing back down. That mistake cost me about 5 hours and a $90 bumper cover I had already prepped twice. Now I keep one primer brand on the shelf and I won't touch anything else when the temp drops below 50. Has anyone else run into primer issues when it's cold, or is it just me being stubborn about brands?
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the_lisa19d ago
Wait, did the flash time change or did the primer actually go bad on you? Because mixing brands is one thing but cold weather is a whole other deal. Most primers have a temp range on the tech sheet and 41 degrees is usually below what they want, so even your normal brand might have acted up at that temp. The orange peel could be from the primer not flowing out right in the cold, not just because it was a different brand. I'd check the tech sheets on both primers before you blame the switch, you might have dodged a bullet by finding out your booth runs too cold for any primer below 50.
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