Hingeless Threadless Filament Dust Filter

I used Scotch-Brite non-scratch scour pads as my filter medium, but sponge or some other similar material should work too. The attached photos show the assembly steps. If you find that you need a tolerance in-between what's provided, use two different tolerances together e.g. a 0.3mm A side with a 0.4mm B side.

In my testing I used 0.3mm layer heights. This is the breakdown of fitment:

0.2mm Tolerance: Tight, might have trouble getting apart.

0.3mm Tolerance: About right.

0.4mm Tolerance: So loose the parts freely slide apart, but still stay together when the filter medium is inside pressing them against each other.

Once the parts are printed, if using the scour pads, cutting them in half vertically gives about the right width for the roll, then just cut a strip about as tall as the inner wall of the housing.

When you roll the filament up into a spiral, make sure to use filament or an Allen wrench as the core so it leaves space for the filament to slide through. If you skip this step you may have trouble passing the filament through.

There is an indent on the side to help get the filter apart using a flathead screwdriver.