Compost Tumbler Made from 5-gallon Buckets

thingiverse

Make a compact rotary-type tumbling compost bin using readily available parts from your local big-box hardware store and two 5-gallon buckets. I've included all necessary hardware to make a tumbling compost bin using 5-gallon buckets and 3/4 inch steel tubing. I've included clamps that attach the tubing to the bucket as well as bearings. I've also included screens which you can mount in various places around the bucket to provide aeration and drainage. I've designed these such that you can use pieces for multiple purposes. The end stops can support the bearing or help hold the bucket in place. You can add multiple buckets in series and support the tubing in multiple places. The bearings are designed to be used as both end-bearings as well as inner support for longer rods, since they're a through-design. You'll need a bunch of 3mm melt-in thread inserts and M3x15mm screws to hold everything together. You can attach the tumbler to whatever homemade rack you like. I welded up one out of some scrap tubing from other projects. It should work well too with one made from wood.