I thought I would make a post of a little hobby that I have been doing for the past couple of weeks. I got my old rock tumbler from my parents that I had growing up. I thought it would be a fun project for my Daughter. I ordered some new grit packets off of Amazon. I spent a few weeks collecting rocks for it. I was looking for unique ones. Also the rocks need to be a certain hardness. If you use the wrong type like a gravel rock it will probably wear away in the tumbler. I have already went though the first two packets of grit, each one takes 7 days 24hrs a day. I am on the pre-polish right now which only takes 3 days followed by another 7 days of polish and then the cleaning. Your gonna spend about a month total for a batch. Now I see why it wasn't much fun as a kid because of no patience. They are coming out nicely though. Each time I clean them it's next to see the forms they take. Anyway if you have a kid or even yourself it's a fun and pretty cheap hobby.