Hadron ORD Bot filament holder assembly and filament guide by nalanengine

Last crawled date: 3 years ago

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 bolt 4 inches long. To prevent loosening I put a dab of blue loctite on the screw.
The filament nut and hub are joined by a bayonet type feature. You'll have to assemble the spool to the hub push the nut on, then rotate it clockwise until it snaps in. This will prevent the nut from rattling off. Even with a full 1 kg filament spool this balances well.
The filament holder bracket is mounted by four M5x12 cap screws. I drilled holes through the Hadron back plate and used the misumi nuts to mount the filament holder. As an alternative method you can drill and tap m5 holes into the back plate.
The bracket has 1/4-20 threads in the base. This will mate with the hex bolt threads.
Once everything assembled thread the filament through the filament guide's slot, then bring it to the front though the 45 degree hole.
The construction might seem complicated, but believe me this is not the first iteration. I've had long prints and when the filament spool is not constrained well and it'll run and bundle up the filament that is the last thing you want in a 27 hour print.
This worked perfectly for me; hope you'll enjoy it too.