Calculator cluster

FDM calibration & firmware

E-steps, Klipper rotation distance, volumetric flow, input shaper accel, Vref, PID and shrinkage.

• FDM calibration & firmware

  Stepper Motor E-Steps Calibration Calculator

  Calculate new extruder e-steps from old e-steps, commanded length and measured filament. Formula: new = old × requested / actual.

• 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 calibration & firmware

  Klipper Rotation Distance Calculator

  Convert a measured extrude test into Klipper rotation_distance, or derive rotation_distance from Marlin e-steps, full steps, microsteps and gear ratio.

• FDM calibration & firmware

  Z-Axis Optimal Layer Height

  Snap a desired FDM layer height to the nearest full-step multiple of your Z lead screw and motor step angle to reduce microstep banding.

• FDM calibration & firmware

  PID Tuning (Ziegler–Nichols)

  Convert ultimate gain Ku and oscillation period Tu into classic Ziegler–Nichols PID: Kp = 0.6 Ku, Ki = 2 Kp / Tu, Kd = Kp Tu / 8 for hotend or bed.

• FDM calibration & firmware

  Stepper Motor Vref Calculator

  Calculate stepper driver Vref from target RMS current and sense resistor for A4988, DRV8825, TMC2208 and TMC2209. Also reports peak current.

• FDM calibration & firmware

  Thermal Shrinkage Scaling Calculator

  Scale an STL to offset FDM cooling shrinkage for PLA, PETG, ABS, ASA, nylon, PC or a custom percent. Outputs scale factor and the new model size.

• FDM calibration & firmware

  Maximum Volumetric Flow Rate Calculator

  Compute FDM volumetric flow Q = layer height × line width × speed, then the maximum print speed a hotend can hold at a stated mm³/s limit.

• FDM calibration & firmware

  Z-Axis Lead Screw Resolution Calculator

  Calculate Z steps per millimetre and linear resolution from motor step angle, lead-screw pitch and microstepping. Helps diagnose Z banding.