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Post by bhindzioncurtain on Jul 21, 2024 12:26:17 GMT -5
Had some pretty good luck with auctions and looking for advice.
Bought a Mini-sonic for $200 shipped. Started my first batch using it for tumbling some agate. Been using a couple of TBS with each step and occasionally spritzing with spray bottle when the action seems to be slowing down.
Bought a Thumbler model T for $66 since I read not to do the course grit in the mini-sonic. Arrived with loose grit and when I turned on sounded a little rough. So was wondering where the best place to get some mineral oil to soak the motor in. Already took my leaf blower to it but haven't drilled out the rivets yet.
Just closed this weekend on a Lortone 3A for $66 shipped. Maybe use both the rotary tumblers for the first two stages.
Bought a MJR Tumblers Rock Tumbler Media Refill Kit and 1/8" Ceramic Tumbling media off Amazon. I read something about borax, do I get that from the grocery store?
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Post by chris1956 on Jul 21, 2024 12:43:03 GMT -5
Mini-sonic tumblers seem to get hot and that may be drying out your rocks. I typically put more water in than they recommend. Also, sometimes the size and shape of rocks will slow it down or they will get jambed. You might try taking a rock out if additoinal water doesn't get it moving.
I use my rotary tumblers only for stage one but nothing wrong with doing first two stages in rotary tumblers other than vibratorys are faster.
You may or may not find borax in the grocery store with soaps. If you don't you can get it on Walmart.com or Amazon.
Don't know anything about the Model T but my Lortone 3A has been great.
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stefan
Cave Dweller
Member since January 2005
Posts: 14,113
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Post by stefan on Aug 16, 2024 16:53:04 GMT -5
Model T's are great. I still have mine, but the motor gave up the ghost after 15 or 16 years. I replaced it with a motor from an AR-12 (same mother that is on the AR-2, AR-1) Took some modification for a new mounting bracket, but it still works. Mini Sonics are grit misers. I use only 1 teaspoon for grinding (I only run 500, 1000 and prepolish in one barrel- never course grits) and 1/2 a teaspoon of polish for polishing. More grit is not better with these. They do tend to like a little more water than other vibes, but honestly if it was a full tablespoon full I would be surprised- probably more like 3/4 of a tablespoon (I never measured it, I put the rocks in wet and spray until the polish seems to just stick to the rocks)
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