Openscad simple spool holder

Wanted a simple spool holder to slot onto the wooden frame I made for the printer.
if you put this into openscad tells you what to alter so you can customise it.
Has a slot to fit over any bit of the printer or frame - Mine needed a frame as it was a bit wobbly without.
Also needs two small holders as a double extruder printer.
Has holes for screws - but actually does not need them.