OK. I've made my primer decision.. It'll be PreKote and Sherwin Williams 2 part mil-spec epoxy... Minimize toxicity (PreKote), and get good corrosion protection (mil-spec epoxy).
My question to anyone who's used this epoxy primer (or another brand of similar stuff): In the info sheet, they say to mix the two parts 1:1. Then they say "reduce to spraying viscosity using slow or fast thinner (part no...), or a mix of the two to meet shop conditions" And then they say "reduce aprox 25% by volume to 17 seconds using a #2 Zahn / 45-65 ISO 2431"
Does it really have to be thinned, or is it good to spray as is? And what the heck is '#2 Zahn /45-65 ISO 2431', a viscosity measuring device? And is straining necessary (they say it is 'recommended')?
My question to anyone who's used this epoxy primer (or another brand of similar stuff): In the info sheet, they say to mix the two parts 1:1. Then they say "reduce to spraying viscosity using slow or fast thinner (part no...), or a mix of the two to meet shop conditions" And then they say "reduce aprox 25% by volume to 17 seconds using a #2 Zahn / 45-65 ISO 2431"
Does it really have to be thinned, or is it good to spray as is? And what the heck is '#2 Zahn /45-65 ISO 2431', a viscosity measuring device? And is straining necessary (they say it is 'recommended')?