Fully Articulated Linear Accelerator (LINAC)

I am sharing this model with permission from its creator, Scott Mathews.

Overview 

This is a highly detailed, fully articulated model of a Linear Accelerator (LINAC), loosely based on the Varian style of radiotherapy machines. Originally designed during a stint in Radiotherapy Engineering, this model is perfect for students, medical professionals, or hobbyists interested in medical technology and complex mechanical assemblies.

Key Features & Articulation

• Gantry Movement: Full 180-degree rotation in both directions, controlled via a manual thumb wheel.
• Imaging Systems: Extendable arms with imaging panels that move up and down.
• Treatment Head: Full rotation for precise positioning.
• Patient Couch: Working scissor lift for height adjustment.
  • Full longitude and latitude movement.
  • Adjustable Pitch and Roll on the couch top.
• Turntable: Rotates 90 degrees in both directions.
• Internal Detail: Includes an alternative "cutaway" gantry version to showcase the internal waveguide and bend magnet housing.

Required Hardware

To complete the assembly, you will need the following:

• Screws: Multiple M4/M5 (30mm long) panhead nylon screws (cut to size as needed).
• Nuts: Multiple M4 nylon nuts and x1 M4 nyloc nut (for gantry-to-stand attachment).
• Main Pivot: x1 50mm countersink machine screw (for gantry-to-stand attachment).
• Rods: 4mm Rod (Plastic or Metal), cut into four 35mm lengths.
• Tools: M4/M5 thread tap, screwdriver, pliers/spanner, and Super Glue.

Print Settings & Recommendations

• Supports: Required for almost all parts.
• Infill: 20% Maximum. (CRITICAL: Printing the Gantry at higher than 20% infill will make it too heavy for the mechanical joints to move smoothly).
• Post-Processing: Use a thread tap on holes before assembly. It is highly recommended to glue the nylon nuts in place once tightened to prevent them from backing out during operation.

License & Credits

• Original Designer: mathews7184
• License: Creative Commons - Attribution - Share Alike (CC BY-SA).
• Note: This model is strictly for personal/educational use. The designer does not give permission for this model or its prints to be sold.

Note: The "patient" model shown in the original photos is not included but can be found on Thingiverse (ID: 2887306).