Simple Filament Spool Holder

This is a simple filament spool holder that I made in inventor. It holds a one-inch diameter rod (I used a metal rod curtain rod I had laying about). in the picture, it is holding five spools (one is admittedly empty) with no problem. It did require a little filing/sanding to get it to fit right, but only at the back. this piece has a really tight fit, I only left 10 thousandths of an inch on either side between the rod and the holder.