This is a warning for anyone who airbrushes and thought that Microscale's Micro Mask would be good to use to mask off complex shapes like space marine iconography or shoulder pads. Avoid it at all costs. It may be good for something, but as a mask it fails.
I love micro set and micro sol, but Micro Mask is garbage. I now consider the internet warned.
On the other hand, I now get to enjoy hours of tediously picking rubbery mask off of my Tyranid war veterans. I mean who doesn't enjoy stabbing themselves in the fingers repeatedly, while trying to get tiny globs of rubber off of miniatures. Good times.
(you guys were right. I wish I had taken your warnings!)