Case for Quest/Quest 2 prescription lens adapter

I love the Oculus Quest/Quest 2 magnetic prescription lens adapter by Robin Engström.  But when not in use, they just sat on the table getting knocked about.

I thought it would be cool to store them back inside the otherwise-unused case that came with the Zenni glasses. So, I did a 3D scan of the Zenni case, and designed an insert to fit in it and hold the Quest lens adapters.

Just pull the thin plastic flocked lining out of the case, and press this one in. For me, it was a tight enough fit that it stays in securely. But double-sided tape or glue could be used if necessary.

The lens adapters are held in place by magnets... the same 5mm x 2mm magnets as in Robin Engström's design.

Since so many prescription-lens projects are based on inexpensive Zenni #550021 glasses, I have also published the blank, generic Zenni case insert that this is based on, so people can adapt it to their own use. It was a truly inordinate amount of work to scan the Zenni case and convert it to a usable T-Spline body. Nobody else should ever have to go through that.

Printing Notes

• 10% gyroid infill
• Supports on

Supports will be required whether you print it with the flat top face down or with the curved bottom down.  Face-down would require less support material, but it would be harder to clean up.  I printed mine curved-side down.

Assembly

The magnets must be glued in.  I used a two-part epoxy (JB Weld).

I used a very small drill bit to make a hole in the bottom of each magnet recess, opening into the interior of the model.  That gives any excess glue somewhere to go.  Otherwise, it can be difficult to press the magnets all the way in.

Before installing the magnets, be very careful to get them the right way round.  Stick the magnets loose onto your lens adapters first, to be absolutely sure of the orientation, and make a small dot with a sharpie on the face of the magnet that should go in first.