What is the most effective composting container? The plastic dustbin type of one build from wood with air gaps every other plank?
I think the ones with air gaps let too much heat and moisture out. I find the plastic dalek type best.
It depends how much space you have and how much compost you make. I initially used pallets to make the walls but as fidgetbones states, found it allowed too much heat to escape. Now I've lined the pallets with thick black plastic they work very well. In my previous urban garden I used the plastic dalek type and found them to be OK for small amounts of garden waste.
I use New Zealand boxes a la Geoff Hamilton. I made them myself which meant I could make the size to my requirements (I have a very large garden).
I didn't use the fancy uprights that these ones have but made a channel using two 2x1" battens for the front planks to slide up and down.
I prefer wood without slats to keep it warmer, I have two of those, starts in one then tips into the next one, then goes into dalek types, or those big blue farm containers, then in compost sacks, by then its winter again and ready to spread.
I'm a fan of the dalek type. I take the bin off its contents, move it somewhere else and refill it from the contents to aerate it. This means you need one more space than you have daleks. Works for me.
I too vote for the NZ box type.
Whichever you choose, make it as big , or as many , as possible.