Portable standalone spool holder.

Summary A portable spool holder for any 8mm shaft, includes a slot for easy mount/unmount on a Prusa i3 MDF frame or similar. I have added a 52mm spool shaft for use with this holder, it can be found here... http://www.thingiverse.com/thing:430531 Instructions Print the parts then snap them together. I recommend using no more than a 25% fill density for these parts.