Molten Canal (Straight), brick
Straight molten canal segment.
This shape doubles as the run's valve: seal a straight cell with fire clay and it becomes a separator that cuts the run there, and a chisel breaks the seal again and refunds part of what it cost. Sealing is refused unless the cell and every canal neighbour on its connector faces stand empty, so a seal can never trap metal against itself.
Which rock or brick a run is cut from changes nothing about how it carries metal; that choice is cosmetic. See Molten metal and casting.

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topMade by
| any Hammer (tool, not consumed) | any Chisel (tool, not consumed) | |
| Fire clay x 2 | any Bricks (running bond) | Fire clay x 2 |
| Molten Canal (Straight), brick | ||
Needs: 1 any Bricks (running bond), 4 Fire clay, a Hammer (kept), a Chisel (kept); makes 1 Molten Canal (Straight), brick
| any Hammer (tool, not consumed) | any Chisel (tool, not consumed) | |
| Fire clay x 2 | Fireclay bricks | Fire clay x 2 |
| Molten Canal (Straight), brick | ||
Needs: 1 Fireclay bricks, 4 Fire clay, a Hammer (kept), a Chisel (kept); makes 1 Molten Canal (Straight), brick
Amounts are the mod's defaults; the recipe-cost level changes them (see recipe cost levels).