Anti Dove/Pigeon spike

A simple model, since I had a problem with pigeons trying to build a nest on my garden floodlight.

I’ve uploaded models for 3mm and 4mm widths; they can also be scaled in the slicer. The Fusion file is uploaded as well.

UPDATE:

V2:
The model is fully parametric in Fusion, you can change the height and the width easily.
Plus: There is a lock mechanism to prevent the spike falling off the profile.

Print settings:

Printed in PETG, 15% infill.
Orientation: landscape, as specified in the 3MF file. No supports or brim required.