67mm Lens Filter Box

Simple Lens Filter Box for 67mm filters.

Most 67mm filters should fit including Variable ND’s / diopters under +10 / CPLs ect. it has an overall internal diameter of 70mm to allow for thicker rings and an internal height of 10mm. The top, bottom and side walls are all a minimum of 2mm thick.

The lid is held on by friction only, I printed mine at .3 so there is some roughness from the layers to grip onto and it works perfectly well. You may need to scale the lid up or down a tiny bit depending on your printer's tolerance but the default 0.25mm tolerance should work for most printers.

I've added some soft 2mm thick foam packing material ( similar to what's found in HOYA filter cases ) cut to size and hot glued to the top and bottom of the cases for an extra snug fit. (This is not required however as the filter ring will contact the plastic, not the glass.)

The downside of this design is that they have eyelet style openings to be able to remove the lid, so they are not waterp