We dealt with this last two years. Tried diamond bit, water running over bit, etc. Finally took blocks to local glass company - paid a couple dollars a piece and they came out perfect. Perfectly round hole, etc. Glass companies have the right tools for doing this and for the price, it is well worth it. ... View related article.
Totally Awesome - cleaner found at the dollar store for $ 1.00 per spray bottle works great! This stuff is so good it will take the paint off of walls. ... View related article.
Don't have homemade recipe for shower cleaner but oven cleaner is the best way to clean a dirty shower (i.e. rental property, etc.) ... View related article.