I store these horizontally as well, so this is exactly what I was looking for. Great model, and an excellent fit too! I did alter the depth on one of them so it would better fit the sanding wheel and the wire disks. (edited)

I store these horizontally as well, so this is exactly what I was looking for. Great model, and an excellent fit too! I did alter the depth on one of them so it would better fit the sanding wheel and the wire disks. (edited)
@Novbre do you have a remix or a link to the modified file?
@number4please_185089
No, I didn't post it as a remix, it was such a minor change I didn't think it was worth it. I can email you the file if you want to see it or include it in with your files.
Most dremel bit organizers are vertical, but I wanted to put my extras in a shallow drawer and also keep them from rolling around/have them visible. This is perfect, though it uses a lot of filament and is a little inefficient about space. Still, works great. I printed three of them to sort bits by type.