this support fits the model with a 40 mm hole. The model was created to use a 50 cm LED strip. I used this:
https://it.aliexpress.com/item/33042428367.html?spm=a2g0o.order_list.order_list_main.11.45853696J8x0Ce&gatewayAdapt=glo2ita
to hold the saupport in place I used a bit of hot glue (inside the lamp body), but you can use any cyano type glue. Supports are needed only for the window cut into the cylinder.
The author remixed this model.
work with 50cm strip led