So, what is there for version 2.0 (which I am very keen to make)?
suggests using "expanded metal"
sheets instead of chicken wire. It is apparently cheaper and from the looks of it it is ticker and the gaps are smaller so you might need less layers.
- Try to make the design look more like an actual tiki (by putting the fire in it's belly)
- Make the walls thicker to get better heat retention and radiation
- Use white cement instead of gray to get better colours
- Make the chimney wider, it will pull better
- Maybe use normal, cheap (gray) cement for the inner structure and finish with (coloured) refractory cement or clay.
- Make a tray to insert a BBQ grill rack
- Try to make the insides of the eyes glow with fire when all surroundings are dark
- Try not to cut my hands a hundred times on the chicken wire
I've had great fun designing and building this small devil and have enjoyed it's warmth a couple of time already. If you are thinking of creating a free-form structure that needs to be cheap, strong and durable I can highly recommend ferrocement although you might want to do a small proof of concept first to get used to the technique.