This is my second umbrella design. This is regular sized umbrella 3d model. Not every mechanical details not given in the 3d model. 3d editable STEP file format attached, if you want you can add mechanical details for manufacturing process.
I put this model in 3d printing category, because I attached 3d editable STEP file format.
You have to contatc with me for custom design and size.
Thanks,Mahbub