Stabilized x-carriage for AO-100 & AO-101

This is a complete redesign of Aleph Objects' x-carriage for igus pillow blocks. It's a direct replacement for the stock x-carriage on the AO-100 and AO-101, and it reuses the stock hardware - no vitamins needed.

The redesign stiffens and stretches the x-carriage by 40mm without compromising print volume, and should keep your parts crisp and clean even with worn bushings.

Happy printing!
-Brent