Input shaper

Definition

Input shaping (Klipper, some Marlin builds) measures the printer’s resonant frequency with an accelerometer and cancels ringing by splitting each move. Higher frequency usually allows higher acceleration. Heavier shapers (EI, 2HUMP EI) cancel more ringing but smooth more, so recommended accel is lower than ZV at the same Hertz. The calculator is a starting cap, not a substitute for resonance testing.

Calculators that use this

• FDM calibration & firmware

  Input Shaper Max Acceleration

  Compute a conservative Klipper/Marlin max acceleration from measured resonance frequency, allowed ringing deviation and shaper type (ZV, MZV, EI, 2-hump EI).

• FDM core & costs

  Print Time Estimator

  Estimate FDM print duration from path length, print/travel speed, acceleration and jerk treated as junction velocity. Trapezoidal moves, metric millimetres or inches.