I started out using a 2 drum tumbler to do interior stained bottles using supplies from Jar Doctor and it worked great. I used a 4" diameter pvc tube with caps and cushioned the bottle inside. Pic. Because I could not do exterior tumbles with it I eventually bought a Jar Dr machine and have had no regrets. I had a ton of bottles to do and do some bottles for friends. Because of the steep investment in the machine, tubes and stoppers, and fine grit copper it is a decision you have to make as to will it be worth the investment and do you have the backlog of bottles to do. Also give your self about a year's experience tumbling your own bottles before deciding to do someone else's. I had help from a gent on the FB group Making Antique Bottles Great Again that saved me from a lot of rookie mistakes. For me it was an easy decision as I also tumble rocks and other stuff in rubber drums on it too. Note: I added the wooden frame and posts with rollers so I could add tubes on top, the machine does not come with that.
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