Quick hummer using greenmix, as an experiment looking for longer burns and more interesting charcoal effects for the least effort possible. Also to do something, anything, while waiting for the weather to clear.
The unmilled charcoal in the composition really spewed out some nice sparks. Despite being barely 60 mesh screened together greenmix the composition spun up the hummer to around 330 Hz or 19.8 kRPM.
The testing area on the balcony was really too small, but it was the only dry place relatively protected from the wind in which to try it out.