Adaptor for small inner diameter rolls and spools to Wanhao duplicator i3

This is a adaptor for filament rolls that have a smaller inner diameter than the rod that came with the original Wanhao Duplicator i3.

The original spool holder has a diameter of 30mm. And if you done as i did (bought a spool with an inner diameter of 21,5mm) then this will help you.

The adaptor is 18mm in diameter and have 55mm spool clearence.
The bigger end of the adaptor has M30x1,5 thread that will fit the nuts that came with the i3 and the other end is a M18x2,0 that fits the accord