Sometimes you can't get the car guy out of the house...
Wife was really struggling with the hard water stains in the master bath standup shower. It's a pita because it is all glass on 3 sides. The water marks on the inside are subtle, but stubborn. She tried everything, including razor blades. So, in a moment where I wished deafness upon myself, I took matters into Studehands... Brought in the buffer and some rubbing compound. Tried other stuff first. Baking soda...nope. Corn starch...nope. Toothpaste... Yes, it worked, but too slow... Rubbing compound.. Worked great, but what a mess! Ended up using Comet cleanser and a squirt bottle. Still made a mess. So there I was, standing in the shower...with a buffer... As I stared out of the shower at the mirror on the wall and seeing myself, all I could think of was the teapot guy on Ebay ... (Ended up finishing and then taking a shower to clean the shower, and me.) Jeff ( Buffing cars is a lot more fun...) Rice