Sleeve for Lamy2000 fountain pen and mechanical pencil

I wanted a sleeve for my Lamy2000 fountain pen and pencil together, so I designed one that could be printed using the spiral vase setting.
It's designed so that the end of the pen rests in the bottom of the holder rather than on the clip, so the cap won't be pulled off if it gets dropped in a bag. The pencil does hang from the clip to prevent breaking the lead.
I suppose this could be called a pocket protector.

They have a bit more clearance than I would like so I'll work on making a tight