M3D Spool Container

OK, this isn't anything new that hasn't been tried before, but I was never able to get the ones I saw to work with my specific spools. SO....I went over to Tinker Cad, (Thank you Tinker Cad!), and got out my caliper and went to work... this is the end product. This works with all my M3D 250 ft empty filament rolls. I printed in PLA at 10% infill, but you might want to increase it. I did have to drill a tiny hole, (because I still haven't figured that part out yet). I used the smallest drill bit I could find that fit my wire and put it in the corner and made a hole. I used a piece of solid core speaker wire, stripped, looped through, (see pictures), and it works great. The small clasp just goes on the front to keep it from falling open.