I have made my own compost bin by using 3 palettes and placing them on a wall. It seems like a big box and the voids in the palettes let air circulation around the compost. I feel that oxygen is useful for the process. Also I never used worms, but I find in there some well fed white grubs. It seems that in winter they work less, but when the weather is hot and rather moist they work better!
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That's a good way to make lots of compost. I've made mountains of compost, Good shit.
Just posted my gardening tips along with some pictures:
https://steemit.com/gardening/@laviq/a-gardening-story