Update: I thought those $9 plastic paint strainers were junk for 15 years, then a guy in Fresno showed me why my clear was always full of trash | Auto Body Repairers - Free To Speak
I watched a video where a painter talked about the mesh size being the whole thing with those strainers. The cheap ones let the little chunks right through, so you end up spraying grit and wondering why the finish looks bad. Guess the Fresno guy was onto something.