I have seen several models that used the principle of a spiral (and even made similar ones myself), but they are not strong and stable enough. Therefore, I decided to use not 1 spiral and connection, but 8 spirals and 8 mounts.
Lamp diameter – 200 mm.
Suitable for IKEA HEMMA lamp and most other pendants with a socket of about 40 mm and an E27 base. It is not worth using incandescent lamps, install "cold" ones, for example LED ones.
Printing time is about 44 minutes with a layer of 0.3, a nozzle of 0.4. No support required.
For printing, you can use any plastic close in rigidity to PETG, PLA is more rigid, so the lampshade will not be long enough.
The author marked this model as their own original creation.