How do you do step 3? I may sound senseless, but do you mean to scrape the inside or just put water in it and shake or even add some natural sealer.
How to Make Your Own Non-Toxic Glass Cleaner
Idea: A simple PIC development board
How do you do step 3? I may sound senseless, but do you mean to scrape the inside or just put water in it and shake or even add some natural sealer.