Motivation

I know, there are already some of these holders for HEPA filters available. Unfortunately, the availability and price of these filters is not always quite satisfactory.

About the model

In order not to influence the air flow unnecessarily, this model does not have a lid. Simply press the filter inside and you're done. It sits reasonably tight but nothing wobbles. Since this filter is used for a wide range of vacuum cleaners, there are accordingly many suppliers. I have so far only tested the linked one below but give me feedback if I should still change something in the tolerances.

The volume is of course not reduced as much as by one of the numerous mufflers. Let me know if you think this is a useful addition.

Note: The alignment of the holder exactly as with any muffler is always a little difficult, because you can not see the vent. For this there is a small mark on one side. Simply place the holder flush with the rounded outer edge and align the mark at the height of the black screw. It is shown on the fourth picture.

What you need…

6x 6x3mm magnets
HEPA Filter

How to print

Nozzle: 0.4mm
Height: 0.2mm
Supports: no
Hint: Make sure the magnets are pressed in deep enough to be level with the surface.