Basically, like the subject says.
Until today, I've been using mostly Mr. Surfacer 1500. However, after hearing much praise about Badger Stynylrez, I figured I'd pick some up from Amazon and give it a shot.
Before using, I shook the bottle well and then took the cap off to check the consistency. I noticed right away the viscosity was pretty high. Definitely not "skim milk" consistency. In fact, a bunch of the stuff was sort of congealed inside the cap. Okay. I followed the directions on the bottle: no thinning, 25-30 psi, 0.5 needle.
I could barely get the stuff to shoot for a few seconds, when my airbrush clogged. I thought, "tip drying already?" Nope. The stuff seemed to turn the consistency of chewing gum inside my airbrush and paint cup. It took me nearly an hour to clean the AB. The paint cup was so caked in congealed primer, I thought I'd never get it clean.
I took a second stab, this time thinning it 50/50 with 91% IPA, but got the same results. Another hour cleaning the AB.
Is it possible I got a bad batch?