Elegoo Neptune 4 Plus / Max Spine WITH OPTIONS!

The already amazing spine by edl had oval “heads” and some range of motion limited by lines. I wanted to make the balls spherical, increase the range of motion, and provide some directional and sizing options for the spine. 

This collection has three sizes for the vertebrae - the smaller provide more motion while each increase in size will reduce the range of motion, increase support, and require less vertebrae.

There are now multiple options for direction, mounting, etc…

Most of the options have been tested.

I printed mine in Matte PLA with 0.2mm layer heights. I like using mouse ear brims to help keep them in place while they print - I do not recommend a full brim unless you want to hate yourself later.

See images and STL files. My printer is in a tight space, so getting good photos is difficult.

Many small changes and options added for the direction of the side-spine. I increased the range of motion made longer vertebrae and some vertebrae have tighter holes.