Powdery Primer

[eques]

Have had my primer spray on powdery a few times recently, making my models look as if they have blundered into a swarm of bees.  Seems to happen mostly with white primer, have had it with different brands.

Any idea what could be causing it?

[Tim]

Maybe you are not Primus inter pares...

I will get my coat...

[aligern]

Not shaking it long and hard enough befire spraying?
R

[Andreas Johansson]

Can be caused by spraying from too great a distance, causing the paint to start drying in flight.

[Swampster]

Are you in a place with high humidity? Temperature can also be an issue but low has more impact than high.