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

  Reproduce Klipper’s suggested max_accel for ZV, MZV, ZVD, EI, 2-hump EI and 3-hump EI from the shaper frequency, with its 0.12 mm smoothing target, square corner velocity and damping ratio.

• 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, using each chip’s datasheet relation. Also reports peak coil 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.