Rigid Coupler (5 variants)
Print Profile(1)
Description
📦 Contents:
This set includes 5 different versions of rotary motion transfer/mounting components, designed for shafts and an M4 locking screw.
Each model features a dedicated hole allowing direct thread cutting with an M4 screw — no inserts or nuts required.
⚙️ Common Features:
Height of all models: 30 mm
Hole for M4 screw with self-threading tolerance – ⌀3.2 mm
Assembly clearance: +0.1 mm (optimized for FDM 3D printing)
Available variants:
5x5 mm
5x8 mm
6x8 mm
6.35x8 mm
8x8 mm
🧩 Applications:
DIY robotics
Gearboxes and drive systems in RC models
Shaft-to-wheel, pulley, or joint connectors
Prototyping and engineering projects
🖨️ Printing Recommendations:
Wall lines: 4
Material: PLA / PETG / ABS
Layer height: 0.2 mm
Infill: ≥ 30%
No supports needed (all models are support-free)
📝 Notes:
After printing, screw the M4 bolt directly into the hole – PLA and PETG hold threads well.
If needed, lightly sand shaft holes for a perfect fit.
Models can be scaled in the Z-axis for custom heights.
Designed for manual assembly – no glue or extra hardware required.
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License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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