Filament guide for wooden box

This may be something someone else can use as well. I made a wooden box for my printer from 16mm plywood. My Filament spool is standing on top of the box, and there is a 16mm hole in the roof of the box, to feed filament through. So i made this guide, one to make the hole in the box look better and two, to guide the filament, to lessen the shaving against the wood.