Tru-square Metal Products Model B Heavy Duty 15# Rock Tumbler, THU140

I had already purchased 2 of these, and really love them. So I ordered another. Having 3 of these and set up in the garage makes tumbling more fun and speeds the process up a lot. These tumblers are built to last, but you must keep them clean to prevent any future problems. Would recommend these products.

The tumbler has been running non-stop sense It arrived. I have been using it to tumble rocks. It is not to loud. Does the job and can hold around 15 lbs of rock. Good buy

I'm using this with stainless steel pin media to clean cartridges for reloadiing. You can find the details of how to do this "around the web". The results are amazing. They come out looking brand new, both inside and out. My only concern is that the motor does tend to get VERY warm even though I'm not loading it to full capacity, so I'm wondering if that's going to shorten its life. DO apply some good quality lubricant to all the shaft bearings before you use it. I didn't on my first batch, and near the end of the processing time all the bearings were complaining pretty loudly. That hasn't happened since I lubed all the bearings with a good wheel bearing grease.

Ran perfect with 15 lbs of stones for two weeks…good machine

The media could not be loaded. When I first got this, I was very disappointed. Some of the metal frame was bent and the pulley was covered in grease apparently so it didn’t get any traction to spin the barrel. Contacted Thumler Directly and spoke to someone who walked me through getting it to work. Wiped off any grease residue that was on the pulley cord and the pulley itself and it was able to spin.Had it for several months and it has been working and it does its job. Polished up quite a few beach rocks and they look great.That being said, I still have some criticisms of this product. It’s definitely overpriced. The motor runs very hot. After less than 3 batches the inner lid gasket is already wearing thin and about to tear. Thumler apparently charges like $18 for a new thin piece of plastic to put under the lid as a gasket. (FYI, you can buy 1/16” Thick rubber sheets by the foot for much cheaper and just make the gaskets yourself). Also, the barrel doesn’t roll completely straight and it starts to slide off to the side and grind away at the roller edges leaving red and black dust all over the bottom.Also, I suggest buying the bulk grit and polish, don’t bother getting the small 1 pound of each stage kits- I’ve gone through over 10 pounds of stage one grit in less than 3 all stage completed batches. (you will use the most step 1 grit, most of the other stages are 1-2 weeks max , but often times I’ve had to keep stubborn rocks in step one for 2-4 weeks to get the shaping I want. Stel 1 grit is available in 10lb buckets for about $30 on amazon).All in all, this seems to be a decent tumbler with an impressive capacity, That being said I still feel it’s way overpriced. $200… maybe $250.. either one of those would be a fair price for this machine- But at its current price, I have to say this model is not worth it.

Love this product. It runs smoothly and quietly. I have mine on a piece of flexible insulation (K-flex eco) on a tile floor on concrete. I say all of that to say that it is almost silent, you can barely hear the rocks tumble. I had it directly on a wood cabinet and you could hear it 50 ft. away. So if you are having problems with the sound I would just change the location. It is built out of very thick steel and around 1/4 in rubber as the lining. The lid has a little bit thinner rubber, and wing nuts that are easily replaced at your local hardware store, but mine haven't worn out. I may post some pictures of polished rocks, but don't really see the point they are indistinguishable from ones that you can find at a souvenir shop. The motor is pretty cheap (I am an electronic technician), but built rugged, so although it is single speed and not very efficient it should last for years as long as you keep the dust out. The belt on mine hasn't worn at all after several months. The only parts that have seen any wear are the red paint where the drum sits on the drive shaft (from getting grit on it after changing to a finer grit), and the rubber guide piece on the drive shaft where it keeps it straight.

I bought this tumbler about two months ago and have used it through one cycle of polishing. It is huge! I only put 7lbs of rocks in it with plenty of room to spare and then filled up the empty space to 3/4 with poly plastic beads. The beach rocks turned out gorgeous! I set it up in a tray in my bedroom walk-in closet and it was quiet enough to leave in there the whole time, although it’s not close to my bed area. I thought maybe I’d have to put it in the basement but it was perfectly fine. I noticed that if I added too much water to the mix it sloshed more and was noisier, so I took some out and it quieted down. It ran 24/7 without a hitch. No rubber wore off as long as I positioned it right on the roller. I am going to attempt a heavier batch next, 11.5lbs with room for the grit and plastic beads. I am going to use ceramic pellets for filler at some point, but they will add weight and I won’t be able fit as many rocks, but I’m doing some big ones and may need them to keep the rocks apart. I suppose I could also use a combination. It’s also important to burp the lid once a day because the heat from the friction causes a small vacuum and the rubber seal will stick to the inside rubber liner if you forget makimg it harder to get off. I will see how the machine holds up to more weight. I’m very happy with this large barreled tumbler so far.