This large blast furnace build by Bob Wysocki is about 30 feet tall and requires a large framework and fork lift for feeding lava rock into the top. This furnace is capable of melting about 1 ton of lava per hour to make very large continuous lava flows.
This set up shows the furnace and a 8-ton lava flow created overnight in downtown Toronto in 2015. Additional lava for melting is stored in bins to the right.
Vertical UAS (drone) view of the blast furnace and the lava flow. The furnace remained hot for hours after the flow demonstration.
