Diffuser for MEIKE MK-C-UP

A "screw on" diffuser for the MEIKE MK-C-UP which is part of the Super Macro Rig built and described by Micael Widell in his YouTube video: https://youtu.be/PW-44IKD8l0

To make his diffuser, Micael used a plastic bottle and a rubber band but having a 3D printer, I thought that I would have a go at designing one of my own.

The MEIKE MK-C-UP unit has what I measured as a 60mm male thread which is unused in the Super Macro Rig and although there is no associated female thread on my design, it will screw onto the MEIKE well enough to remain in position. (If it fails to do so after repeated use, I suspect that a piece of sticky tape or PTFE may come in handy).

As I am still waiting for the delivery of my MEIKE flash, I have not been able to test this out yet when taking photographs but the length of the diffuser does not project beyond the focus point of the lens so I don't envisage any sort of issues in that area. (I am also still waiting for delivery of a step down ring onto which I will place white tape as shown in Micael's video).

No need for supports

EDIT
I have added a second diffuser which is 6mm shorter than the original which I posted - allows more light to get through from the external flash.