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6mm 8mm Pillar Parallel Clamp — Optical Axis Fixing Steel Pipe Round Frame Connector for CNC & 3D Printer
Pillar parallel clamps for fixing 6mm and 8mm optical axis rods, steel pipes, and round frame rails in CNC machines, 3D printers, and linear motion systems. The parallel clamp design holds two rods in precise parallel alignment, making these essential for building and maintaining linear rail assemblies, frame structures, and optical axis guides.
Key Specifications
| Compatible Rod Diameter | 6mm / 8mm (per variant) |
|---|---|
| Type | Pillar parallel clamp / rod connector |
| Material | Steel |
| Application | Optical axis, steel pipe, round frame rail |
| Use Case | CNC machines, 3D printers, linear motion systems |
Why Choose Pillar Parallel Clamps?
- Precise parallel alignment — holds two rods in exact parallel for accurate linear motion
- 6mm & 8mm compatibility — fits the most common optical axis and steel pipe diameters used in CNC and 3D printing
- Steel construction — rigid and vibration-resistant for long-term linear rail assemblies
- Easy installation — clamp and tighten; no welding or special tools required
Typical Applications
- CNC machine linear rail and optical axis assembly
- 3D printer frame rod fixing and alignment (Prusa, Mendel, CoreXY)
- Linear motion system rod connector and spacer
- Steel pipe frame and round rail structure assembly
- DIY robotics and automation frame construction
Compatible With
6mm and 8mm diameter optical axis rods, smooth steel rods, and round steel pipes. Compatible with: standard 3D printer optical axis (8mm), CNC linear rail rods (6mm/8mm), and general round frame construction.
Package Contents
- Pillar parallel clamps (quantity and rod diameter per selected variant)


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