I have designed a new mag-ball carriage. I named them the Hammerhead because they look kinda like the shark... :)
With the old design, i lost 10mm of my build radius. (20mm in both directions) That was too big of a hit on my build plate. These are designed to give that space back; with maximum arm travel.
I printed them out of ABS with a 100% infill and a 2mm wall. They need to be rock solid. Any flex and the prints will come out looking bad.
There are 3 types of STL files attached. One is a complete build. The others fit together with some glue. I used "ABS Juice" as my glue. Make sure they fit together well and hold them tight when you glue them.
I used M3 x 8mm button cap screws for all the mounts. 6 for each carriage. The balls are 9.5mm (3/8th in) ball bearings with an m3 hole drilled and tapped.
The spacing between the balls is 40mm.
I am still working on the effector and arm designs.
Any questions or need some help drop me a line.
added 10mm Ball stud ver for 48mm and 50mm Spacing
Add 50mm and 48mm ball spacing.
Updated the License and added more tags
Added STEP files and removed duplicate models.
Trimmed off one corner of the belt clamp to improve arm reach.
Added a 43mm Ball spacing design
Printed out of ABS with a 30% infill and a 2mm wall.