Continuous clockwise rotation Crown-Down Sequence: Create straight-line access to canal orifice (SX) Shape the coronal 2/3, confirm working length and smooth the root canal (S1, S2) Shape the apical 1/3 with finisher (F1, F2). If necessary, proceed to F3, F4, F5. SX→S1-→S2→F1/F2→F3/F4/F5