Hadron ORD Bot filament holder assembly and filament guide

I designed this filament holder a while ago. It was specifically designed for the octave filament being sold by Amazon. Off course there are various spools being sold today. This will accommodate many more types (like the one sold by automation technologies). It is used together with the filament guide. Te guide has a "NO GRAB" text recessed into it, so people would not lift the printer by this - it will not break though.
To mount the filament hub on the filament bracket I use a 1/4-20 hex bo