TAMBURATTO Buratto a tamburo rotante - Rotating drum tumbler

thingiverse

After a joyful meal with friends, I found myself left empty-handed, staring at a large can of beer. The perfect moment to think about creating an instrument that would be useful in my laboratory. Seeing other projects on this site sparked the idea to design something tailored to my taste. However, the spread of COVID-19 meant I could only conduct an "empty" test, without any materials inside the drum. I'm still unsure when I'll be able to carry out a complete test. Based on the lack of real-world data, I assume that a rotation speed of 30/35 rpm might be suitable. A higher speed would result in a centrifugal effect, which isn't ideal for this project's purpose. My goal is to obtain volcanic sand, known for its high abrasiveness. To match my motor's specifications, I had to create a very high reduction ratio (Z 7.4:1). This led to the necessity of installing gears with a significant difference in their teeth count. To avoid increasing the already considerable dimensions and assembly difficulties, I opted against a two-stage reduction. A PDF file accompanying this message contains both the shopping list and assembly instructions.