This update adds a new rear anti-slip component that prevents slippage on the stepper motor shaft during high extrusion resistance.
Visit the official project homepage:
https://petamentor.com/
🛠 What's New
New rear anti-slip locking part integrated with the pulley body.
Improved stability on high-resistance extrusion systems.
All updated STL / source files included in the package.
📦 Package Contents
All updated and ready-to-print STL files, including the new anti-slip component.
🖨️ Printing Details
Material: PLA
Printing Temperature: 210–220 °C
Supports: Not required
Layer Height: 0.2 mm recommended (0.12–0.28 mm works)
Infill: 20–40 % depending on required strength
🔩 Assembly
Parts are screwed together using metric screws:
Screws: M3 × 10 mm
Do not overtighten — PLA can crack under excessive torque.
Ensure the anti-slip component sits firmly on the motor shaft.
⚠️ Notes
Test the fit on a spare shaft before final assembly.
For higher durability, PETG or ASA can also be used.
Minor sanding may improve fit if your printer tolerances vary.
🔧 Compatibility
Designed for standard NEMA stepper motors (5–8 mm shafts).
Custom shaft dimensions may require slight CAD adjustments.
📣 Changelog
v1.1 — Added rear anti-slip part + small improvements to M3 screw holes.
🌐 Visit the Homepage
Explore more upgrades, tools, DIY systems, and PET filament innovations at:
https://petamentor.com/
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