Initial attempt, 350mm diameter, 4mm thickness.

Printed in PLA, only as permimeters.

Used tie-wraps to fix some branches in position.

Onshape document: https://cad.onshape.com/documents/55bec55765ec8a94740d794c/w/5dbf1aeb3ce784aac9e465a2/e/9b45fa03bde16b9c445154d5?renderMode=0&uiState=69db754684776539ce52335e