I did one of my skidloaders dry blast and then went over it right away with a thin primer coat. --- With wet blast, as soon as it dried off you should be able to primer it I would think.
Here in central IL. it's humid during the summer so I only try to do paint work early in the spring.

"A machine you build yourself is a vote for a different way of life. There are things you have to earn with your hands."