Optional addition to RepRack, default configuration comes standard on all RepBoxes v2.3.1 and up. The slip rod allows for much more lubricity than just trying to pull a filament spool on a piece of pipe alone. In addition the ribbed pattern keeps the spool from wandering left to right and gives you some indexing for attaching compatible accessories like RackStands and RackRollers.
Check out our new ROTINI for using cardboard spools with slip rod too!
We've included a parametric model so you can adjust the sizing for common piping found in your area as well as different ribbing patterns and overall length. This part is designed to print in vase mode using our over-extrusion technique for better layer adhesion and more wear surface in addition to removing seam points which interferes with flanges being able to easily slip on the part. See the attached README file for more details on printing.
The author hasn't provided the model origin yet.