I mixed it in a ceramic cup. I only applied the MS to "prime" the headlight before applying the spar/MS.
After it hazes, you can see the drip marks in the haze. I'd have to resand from 800 to remove the haze.
I mixed a fresh batch every time.
So I had just finished sanding my headlights from 800-3000. Cleaned em up with IA and let it dry. Mixed the spar/MS 50/50 and applied it. A few minutes later it started hazing up so I took some MS to wipe it off and try it again. Hazed up!
I re-sanded and cleaned up with mineral spirits and...