Twin-Tub Blower

Axle-driven twin-tub bellows. Supplies blast air to the pipe line at its outlet.

The Twin-Tub Blower is the mechanical alternative to a steam Air Blower: an axle turning its frame drives the two tubs the stages raise, and it pushes whatever that turning is worth straight into the pipe fitted at the front. It never needs a boiler, but it also never clears the pressure the Bessemer process wants; a waterwheel or a windmill through it makes iron, not steel. See Ironmaking for the speed-to-flow curve and the 2.0 atm seal it cannot pass.

Feed it power at the axle cell above the frame and run a pipe up to the outlet cell in front of it, facing back at the blower. A pipe merely resting nearby, with no connector facing the outlet, carries nothing away, which is why a built and turning blower can still leave the furnace reading zero blast.

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Made by

any Board	any Board	any Board
any Support beam x 2	any Hammer (tool, not consumed)	any Support beam x 2
any Board	any Board	any Board
Twin-Tub Blower

Needs: 6 any Board, 4 any Support beam, a Hammer (kept); makes 1 Twin-Tub Blower

Amounts are the mod's defaults; the recipe-cost level changes them (see Commands and config).

Built in place

Stage	Materials
1	none
2	any Support beam x 4, Nails and strips (Iron or Steel) x 2
3	any Board x 4, Wooden axle, Rod (Iron or Steel) x 2
4	Plate (Iron or Steel) x 4, any Board x 4, Nails and strips (Iron or Steel) x 4
5	any Piping (Straight) x 2, Plate (Iron or Steel) x 2

Needs: 4 any Support beam, 6 Nails and strips (Iron or Steel), 8 any Board, 1 Wooden axle, 2 Rod (Iron or Steel), 6 Plate (Iron or Steel), 2 any Piping (Straight)

Amounts are the mod's defaults; the recipe-cost level changes them (see Commands and config).