Designed in Tinkercad - prints happily with no supports or brims and 15% infill. Holds the parasol very securely, however you will want to put it in at the base near the umbrella or the gold ring zone, and slide it down to the flared end where it sits very securely, to avoid scratching the finish (which I did on a v.1).
Holes are designed for #8 US screws.
The author marked this model as their own original creation.