Simple Spool Holder

After trying several spool holders (I was after one not attached to the printer), I had tried a couple of simple ones, I found that when the spool was nearly empty it would fall off. Spent some time looking for a better one in the end I designed this

So here is my simple 2 part holder, there are 3 versions 70mm,80mm, 90mm internal gap.

These were designed to be printed on my Tevo Tarantula (200x200 bed)