Quote Originally Posted by FrankenWashie View Post
...and that is completely different weirdness to the weirdness I had with the black stump.
Possibly a job for DB? Was it a New batch of BS?
Yep, the new stuff in the alloy bottles.

I was sparing with the application and the CG done at the same time is good so I would expect humidity to affect both finishes not just the BS

I'll give it another sand to flat it off tomorrow and give it another coat and see what happens