And then starts the threading of the warp through the heddles attached to the shafts (pedals): from 2 to 12, depending on the design. Each warp thread goes through a heddle. This is unarguably the most tedious step of the entire weaving process.
The threads, one by one, are then drawn through the reed - which resembles a comb - with a hook and tied in bunches to a rod at one end.
And now the loom is ready for weaving, which is basically repetition of three actions: Shedding (raising and lowering of heddles), Picking (traversing of weft across the loom) and Battening (pushing the weft to the edge of the fabric).