Fully printable spoolholder

I build a Mendel90 from a kit by nop head. This kit included a spoolholder, but only for a particular type of spool (narrow and large radius) which nobody seems to sell around here. So I designed this universal spool holder.
I couldn't be bothered to get any vitamins, so I made it fully printable, meaning you don't need any extra parts and it'll just snap onto your printer!
In the meantime I've been using it for a couple of months now and it works flawlessly. The spool slides over the holder