This simple Spool Holder for bigger spools is wall mounted and can hold up to 3 kg if mounted correctly. To use it you need two 608ZZ (8mmØ) bearings which are later glued (I used superglue) to the Tube, so they don't fall off.  

The Stand can hold Spools with a radius up to 170mm (that's a 340mm diameter) and up to 100mm wide rolls. Obviously smaller ones are also Possible! 

The empty spool from the picture is a 3Djake 2,3 kg spool.

Unfortunately I cant tell you if you need support as I have only printed it with it, but I don't think it works without anyway as there are way to many bigger overhangs!
If someone can improve the print I'd be very Thankful!

(This is the first version of this model and the first I've ever uploaded.)