For owners looking for ender 3 v3 ke input shaping explained, the useful distinction is between running vibration compensation and measuring your particular printer. The KE supports input shaping through its Klipper-based Creality OS. Calibration supplies measurements for your machine; it is separate from the Z-offset and bed-leveling self-test. Creality’s KE overview lists those functions separately.
What input shaping changes on the Ender-3 V3 KE
Input shaping schedules motion commands to counteract vibrations excited by direction changes. This open-loop control uses configured resonance parameters instead of continuous sensor feedback. Klipper explains the mechanism.
Frequency and shaper type are different settings. Frequency, in Hz, identifies what the filter targets; type selects the filter design. Klipper allows separate X and Y settings through shaper_freq_x, shaper_freq_y, shaper_type_x, and shaper_type_y. A frequency of 0 disables shaping on that axis. Those are upstream configuration rules, not a claim about the KE’s factory values. Klipper configuration reference.
Identify ringing before changing settings
Ringing, also called ghosting, appears as repeated waves after a sharp edge. Look beside lettering or a Benchy’s cabin opening. Prusa’s ghosting guide includes a photographed Benchy example and recommends checking belt tension and using a firm support surface.
A layer shift looks different: the print becomes displaced sideways above a particular height. Check belt tension, pulley security, and obstructions in axis travel. Input-shaper tuning does not repair a slipping pulley. Prusa’s layer-shifting guide illustrates the distinction.
Corner blobs point toward extrusion-pressure tuning. Pressure advance adjusts extrusion during acceleration and deceleration; it does not change the toolhead’s motion path. Diagnose that separately using Klipper’s pressure-advance guidance.
Calibrate the KE with the G-sensor
Creality sells a KE-specific ADXL345 vibration sensor. The documented stock-screen workflow makes it the straightforward route for owners who want measurements without manually editing Klipper configuration.
Follow Creality’s illustrated G-sensor instructions:
- Print the specified brackets. Creality recommends PETG with over 30% honeycomb infill. Fit the X bracket behind the hotend and the Y bracket beneath the bed’s slide plate, following the mounting illustrations.
- Secure the sensor to the X bracket. Connect its supplied cable to the sensor and the rear Type-C port on the Nebula screen.
- Open Settings → Input Shaping and complete the Hotend Test.
- When prompted, move the sensor to the Y bracket. Select Installed to start the Hotbed Test, then let the procedure finish.
The mounting change matters: this bed-slinger needs toolhead measurements for X and bed measurements for Y. A loose sensor mount can corrupt the result. Observe the resonance sweep and stop if movement becomes violent. Klipper’s measurement guide explains both points.
After completion, Creality says to power off and remove the sensor and brackets. They need not remain fitted during printing. Its guide recommends recalibration after firmware upgrades and a vibration check every 500 printing hours.
Documented PLA settings for a ringing test
Use an Ender-3 V3 KE with its 0.4 mm nozzle and Creality Hyper PLA. These are a documented starting setup, not measured performance results. Creality’s KE Hyper PLA profile specifies the temperatures and flow ratio below; the geometry and motion settings select values from Klipper’s ringing-tower procedure.
| Setting | Test value |
|---|---|
| Nozzle temperature | 220°C |
| Textured-bed temperature | 50°C |
| Filament flow ratio | 0.95, equivalent to 95% |
| Layer height | 0.2 mm |
| Walls/perimeters | 2 |
| Infill / top layers | 0% / 0 |
| External perimeter speed | 80 mm/s |
| Initial test acceleration | 1500 mm/s² |
| Minimum layer time | At most 3 seconds |
Keep your already calibrated flow ratio if it differs from the bundled profile. Record the spool’s manufacturer, color, and batch where available, and use that same spool for comparisons.
Keep the tower’s original orientation; its X/Y labels identify measurement faces. The acceleration shown is Klipper’s initial test band.
Choose acceleration from the print, not the headline speed
Creality specifies ceilings of 500 mm/s and 8000 mm/s² for the KE. Treat these as product limits rather than proof of clean lettering at those settings. Creality’s specifications.
Shapers trade vibration suppression against smoothing. MZV generally smooths less than EI; EI tolerates resonance-frequency variation better. Klipper’s shaper-selection discussion explains the compromise.
If you have access to Klipper’s calibration output, its suggested acceleration is a theoretical smoothing limit. It does not certify motor torque, and automatic shaper calibration does not automatically apply that acceleration. Choose a working limit below the relevant X/Y estimates and verify the part. Klipper’s acceleration guidance.
Can you calibrate without an accelerometer?
Yes. Klipper’s manual method calculates frequency = V × N ÷ D, using wall speed V and N ripple intervals across distance D. It requires console/configuration access; follow its test preparation and restoration steps.
How to verify the fix
Print the same tower before and after calibration, keeping orientation, filament, speed, acceleration, and lighting consistent. Success means weaker repeated echoes without visibly softened details. If the baseline has no visible ringing, it cannot demonstrate an improvement. Save the project and label the prints so the comparison remains reproducible.
For a broader engineering parallel, sister publication Tech Sentinel explains why a completed fix still needs validation. Here, the evidence is the printed wall, not merely a completed calibration screen.
Finish with your actual part geometry. If corners still bulge, check pressure advance with the same filament and temperature: those variables affect its calibration. Klipper’s pressure-advance notes explain why a different spool may need different extrusion tuning.
