The z-tolerance is slightly larger making this item easily printable at .15 or .2 mm layer heights. This is to increase print speed and to allow the slug to articulate with the larger heights much easier.

Printing the original model at .15 or .2 mm heights would cause the segments to droop together at the top and bottom. While you can separate them successfully, this model provides a slightly easier experience with the final print having a slightly better look as well as being able to articulate easily right off the bed.

Note: This model is slightly larger and slightly taller to make the tolerance change more successful, so it is not exactly the same size as the original model!