Ther original tool was too big for this usecase, so i designed my own smaller version. This compact, user-friendly adjustment aid helps you set the travel end points (upper and lower limits) on motorized roller shutters more easily and accurately. The design is intentionally smaller than many factory tools so it fits into tight housings and makes fine adjustments without bulk. Suitable for many Schellenberg electric roller shutter motors and other motors with compatible clamping/shaft geometry.

Features

• Compact, low-profile design for use in confined spaces.
• Simple push-on or clamp fit to the motor shaft for safe, repeatable adjustments.
• Clear leverage points so you can turn the motor slowly while observing limit changes.
• Printed as a single part — no assembly required.

Compatibility & disclaimer

• Compatible with: Many Schellenberg electric roller shutters — check your motor shaft/clamp size before use.
• Not affiliated with Schellenberg. This is a community design intended to be compatible; verify fit and function before relying on it.
• Safety: Always disconnect power or follow the motor manufacturer’s safety instructions before making adjustments. I am not responsible for any damage or injury from use — test carefully and proceed at your own risk.

How to use (example)

1. Power off the motor or put it in manual/adjust mode per the motor manual.
2. Fit the adjuster onto the motor’s shaft or clamp area until it seats securely.
3. Slowly operate the motor (step mode or short pulses recommended) and use the tool’s leverage to stop or sense the travel point.
4. Set the end point according to the motor’s programming procedure.
5. Remove the tool and verify normal operation.

Printing recommendations

• Material: PETG or ABS for better toughness; PLA is acceptable for light use.
• Layer height: 0.16–0.24 mm for a good balance of detail and strength.
• Infill: 30–50% (higher if you want a sturdier tool).
• Wall/shell: 2–3 perimeters (1.2 mm+).
• Supports: Usually not required — print flat on the largest face.
• Fit tolerance: Designed to be a snug fit — if your clamp/shaft is tight, scale the model +1–2% or add 0.2–0.5 mm clearance as needed. Always measure your motor’s shaft/clamp before printing.