Summary

This is a remix of the filter paper holder created by maxstier. (https://www.thingiverse.com/thing:3767887)
En based on the remix made by DaakTwo.

Two M3x20 screws and 2 square nuts are needed to secure the filter holder to the rods.
Oh, and as a bonus I added the endcaps, which you can put on top of the rods. Mine are 8mm hollow aluminium rods, that were quite sharp after cutting them to length (45cm).

Print the holder upside down with no supports. The back side can be printed flat.

P.S. don't mind the label on the bottle. I was just having fun with Fusion 360 :-)

EDIT: Added a version with an open ring. Less chance of spilling resin on the ring when disposing the filter.
I also increased the slots for the M3 nut. A standard hex nut should now fit as well instead of the thinner square nut.

Print Settings

Rafts:

No

Supports:

No

Resolution:

0.2

Infill:

20%

Filament:

ColorFabb PLA/PHA