Natural builder, heater mason, wilderness guide. I am drawn to study and practice the (so called) primitive technologies. My heater building usually involves a mix of high-tech materials where most appropriate, and low-tech home-made materials such as reclaimed and adobe bricks, and earthen plasters. 'Progress' need not always involve reaching for something shiny and new - especially when the time-tested 'old' proves viable and reliable... Eg. optimized wood-fired mass heaters.