SolidCore CoreXY Y-Axis Carriage Design

For over a year now, I've been working on the SolidCore CoreXY design. The goal is to have a carriage assembly with interchangeable print heads. The design uses "c"-shaped aluminum channels to reduce weight and machine time. The current design mounts to a MGN12 linear rail but I may experiment with a MGN9 to reduce weight and decrease the footprint which would also increase travel distance. I prefer to have the hotend and sensor interchangeable. Here's some different models I'm working on.

• Independent hotend/probe mount
• Combined hotend/probe mount

The carriage was designed to be lightweight but strong and interchangeable. We have plans to reorient the the y-axis linear rail into a vertical position to reduce any deflection or sag but the current version will be easier to adapt an E3D Toolchanger.

Balancing the pull to the center of carriage instead above it or below seems to be more rigid and minimize deflection. The belts are somewhat within the same plane of the three linear rails to avoid rocking cantilever loads that other designs may have with the belts up high or down low.

Belt Anchor And Tensioner

The current carriage design uses M2 tapped holes to mount the y-axis endstop switch and act as a self locking post. For now the motor mount plate has slots to tension the belts. You can get more information along with the latest design dimensions and changes on my You can get more information along with the latest design dimensions and changes on my research site.