RDGUS adds a lot of costs so I would put that on the back burner.
The next generation GUS arm that I am going to release in the next month would be my top pick due to the mathematical savings you will get in the firmware. The current GUS arm would already be a great solution for this. (The leveling linkage will be a bit crazy but doable.)
SPUD would also go a good choice. However, I would change up the design a little to get some more resolution. I would use the same technique I talked about for the 1-arm SCARA. Gear up two separate spools that drive the big pulley.
You should read all of this post. It intersects what you want to do.
![]()
This is one way to cheaply keep the hot end vertical.
The next generation GUS arm that I am going to release in the next month would be my top pick due to the mathematical savings you will get in the firmware. The current GUS arm would already be a great solution for this. (The leveling linkage will be a bit crazy but doable.)
SPUD would also go a good choice. However, I would change up the design a little to get some more resolution. I would use the same technique I talked about for the 1-arm SCARA. Gear up two separate spools that drive the big pulley.
You should read all of this post. It intersects what you want to do.
This is one way to cheaply keep the hot end vertical.