FlashForge Adventurer3 Filament Holder

### * This model only fits early model of Adventurer3

Spool holder for third-party filaments. Need a rubber sheet or other to prevent slip. Fix the adapter with rubber band or tie-wrap.
"adapter_tight" is for 1mm thickness rubber sheet, "adapter_loose" for 2mm.

"rod_genuine" supports genuine filament spools. (300g, 600g)

Compatible spools:
- Internal diameter minimum 30mm
- Thickness maximum 100mm

8/15/2018 Replaced the rod 3cm lower version.
3/23/2019 Added "adapter_with_hook_*"