Big Filament spool stand

Had a problem using a big 2.5kg spool since it did not fit on any holder I had. Also putting it on ball bearing guided pipes did not work as the spool with thicker in the middle then on the outer shelf.
So I quickly contructed a stand for it. It is open to the top for easy mount and dismount asuming that the weight of the spool should be enough to keep it safely in place. If not maybe construct a clamp that can be mounted on top and some screw holes for the bottom part.
The alloy tube is from the qidi printer filament holder but you might use whatever you have or even print one.
to reduce rolling resistence you can add a spool spacer as I uploaded here:
https://www.thingiverse.com/thing:4286502