

Assembled belt clamp shown with OSSM v2 AIO PCB Backpack Mod and OSSM Motor Cover
This is a proposed new standard part that addresses printability and strength issues in the current standard belt clamp design.
Features
- MGN12 rail compatibility: Slotted design fits MGN12 linear rails
- Wide belt support: Pass-through accommodates belt widths up to 15mm
- Universal thread tolerance: Fine-tuned threading works with unmodified 24mm female threaded parts regardless of printer tolerance
Assembly videos
Watch these videos to learn how to assemble and tension your belt clamp:Overview and attaching threaded end
Learn how to attach the threaded end to your assembly.
Tensioner and tensioning
Learn proper tensioning techniques for optimal performance.
Required printed parts
Print the following components for a complete assembly:| Part | Quantity |
|---|---|
| Threaded Belt Clamp - 24mm Thread | 1 |
| Threaded Belt Clamp - Clamp | 2 |
| Threaded Belt Clamp - Tensioner | 1 |
| 24mm Nut - Hex Flower | 2 |
| Tool - Hex Flower Wrench | 1 |
| 24mm Endcap - Hex Flower | 1 |
Print settings
Print all parts without supports using OSSM standard settings.
| Setting | Value |
|---|---|
| Walls | 6 |
| Infill | 15% crosshatch or gyroid |
| Supports | None |
| Estimated print time | ~3 hours |
| Estimated filament | ~85g |
Bill of materials
24mm threaded clamp hardware
| Part | Quantity |
|---|---|
| M3x8 Socket Cap Screw (M3x12 max) | 1 |
| M3 Hex Nut | 1 |
Tensioner hardware
| Part | Quantity |
|---|---|
| M5x20 Socket Cap Screw | 1 |
| M5 Hex Nut | 1 |
Purchase options
Print + Part Kits
Purchase pre-printed parts and hardware kits from Etsy.

