Anyone know where I could find a "five gallon bucket rotating drum concrete mixer" for sale, similar to this design found in a 1966 "Popular Mechanics"-like publication? Photos of design are included here.

https://imgur.com/a/m6LG9K3

So ive got this old article (and now you do as well 😃) on how to make a rotating drum mixing machine. A standard five gallon bucket is rotated sitting in a basket using a 1/3 hp electric motor. The bucket needs no attachment to the basket, and can be lifted out and removed at ease.

I would like to adapt this design to create a rotating drum soil sieve, a ball mill, tumble mill, soil mixer, etc. It would be really nice because soil sieve are expensive for some stupid reason, yet five gallon buckets will always be cheap. I envision a simple system where I could easily modify a few buckets to allow separation of soil to different particle sizes.

Unfortunately, ive had a hard time finding a machine like this for sale. I see that some companies sell rotating drum mixers for 5 gallon buckets, but these tend to always be commercial units intended for asphalt/epoxy/other expensive work. These units are far too expansive.

Anyone ever find something like this for sale somewhere? If I dont end up finding one, I will probably just end up following the article here and building one myself.