Loud, the tumblers were slick and initially after lubricating the shafts with 3 drops of oil. The tumblers would not turn. Initial try was 1/2 full. Emptied tumblers, filled with H20, and tumble media to 1/2 full, and restarted. Tumblers styill would not turn. The shaft was spinning but the tumblers just sat. Tentioned the belts to the motor and still the tumblers just sat. The coating on the outside was slick. Washed the outside of the tumbler with soap and water. Still just sat on the spinning rod. Had to get 2 rubber bands and put them around the drums, to get them to spin. It has run for 5 hours, the motor is hot. The support roller, has stopped turning and after disassembly of the plastic bearing assembly, the bearing appears to have partially degraded or warped. The drums are now turning, but they are hopping and bouncing since the support roller still wont turn with out direct hands on turning. This is not a good product. Not sure what the heck the endorsers of this see in it. Not good, will be asking for refund or replacement. Read more

Great machine. Works perfect. Read more

Remove the steel cover from the motor bay. Apply a drop or two of mineral oil to all moving parts (front and back motor bushing, where the rotary parts meet other metal and plastic). But do not apply any mineral oil to the belt or gears, or get it anywhere near those. Apply automotive belt dressing to the rubber belt, be careful not to apply too much or to get it on other parts. The belt will last longer and be less prone to slippage. Replace the metal cover. There are two hard edges of plastic on the sides of the barrel that have been left from manufacturing. Not the bumpy texture of the barrel - two raised hard lines running the length of the barrel on either side. Left as is, these will cause the barrel and the machine to vibrate and bump around unnecessarily. Use some coarse sandpaper to gently sand down those lines. The motor and moving parts are no longer subjected to unnecessary jostling and fatigue. Place the tumbler in a cool place, and protect it from dust without restricting air ventilation whatsoever. (Like an open shelter) Placing the tumbler in a closed cabinet to keep it clean and quiet will cause overheating of the motor, other components and your barrel of rocks and slurry (bad). Tumblers you see in cabinets have motors mounted outside of the cabinet. Every 2-3 months, Remove the cover and clean the inside of the motor bay, as well as the rest of the machine of any dust and buildup. Reapply the mineral oil and belt dressing, and replace the belt if necessary. Your machine should last you a good while following these steps. Optional: If you have one lying around, grab a heatsink from an old computer component that would fit on the steel behind the motor housing. This is where a majority of the heat builds up. Use some computer thermal paste and superglue to fix the heatsink flush against the steel. The excessive heat of the motor is no longer a design flaw. You don't want to use fans because the machine will collect a lot of dust. Read more

First the plug its US Second its 120 V So its damaged after I received 1 hr The detail should be very clear and its not even there Read more

I have been running this tumbler for a month now. I am very pleased so far. It's also fairly quiet for a tumbler. Read more