I'm looking for a reliable Rock Tumbler machine that won't break on me, the problem is I don't want one that will cost an arm and a leg. I'm definitely an amateur at this and have tried both kinds they sold at places like Hobby Lobby (Science Tech brand), but the problem is they KEEP breaking/leaking (I've bought several)!
Thanks in advance!
The brand was called Science Tech and the other was called NSI
Here's a picture of the two I've tried...