The holder is mainly supported by the pole in the back.
Inner and outer plates are screwed together with M3 screws. I used 6 M3 Inserts, 4 long and two short.
Pole can be clamped down using two M3 screws, pole diameter is 7.7mm and hole diameter is 8mm. Five PC4-M10 ptfe fittings used to hold tubes in place.
Fabric can be pierced by small sharp object like a drill and screws and tubes pushed through after, no need to cut huge hole.
The author marked this model as their own original creation.