I’ve used this method before but added caulk instead of paint. Standard. plexi 0.091 from HD. Run it across the hobby size table saw to cut groves and then paint. Small window is black acrylic paint. After it dries I polish it with a scotch pad to remove paint from the panes. Makes the window a lot less clear but I never do interiors and inside light comes thru fine. The big window is the new test… schmeared it with white latex caulk and after it dried for a couple of hours I rubbed the the panes with my thump to clean off the caulk. The point is… I’ve seen a lot of steel framed windows in homes and factories that have frame members that are only about 1" wide and perhaps 3/16" thick on the outside… that’s 0.006" thick in 1:29…what’s that ?..the thickness of paint? Going to use this for my next factory. Anyway… here’s the pic
