Basic Tramming Arm – Easy & Affordable CNC Alignment

Ensure your spindle is square with your wasteboard using this simple, effective tramming arm—designed for hobbyists who want pro-level results without the high cost.

What’s Included:

3D-printed Tramming Arm
(2) Precision ¼” Dowel Pins

No extra hardware required—just insert one pin into your spindle’s collet and the other into the opposite end of the arm to begin the tramming process.

✨ Key Benefits:

Quick & Easy to Use – Ideal for beginners or anyone wanting fast results
Accurate Setup – Helps align your spindle perpendicular to the bed for optimal carving results
No Dial Indicator Needed – Tramming by visual inspection of pin alignment

Learn More:

How to Tram Your CNC – Inspired by Winston Moy’s popular tramming technique
Tramming Arm Knowledge Base Article

Originally designed by Chris (thank you, Chris!) and shared with the community to make precision setup accessible to everyone. We’ve improved the design by including precision dowel pins and making this tool available for those without 3D printers.

Looking to take it a step further? Check out our Professional Tramming Arm for enhanced accuracy with dial indicator support.