This is a 4 part bird spikes. 3 rows of spikes per one base detail.

Tolerance in connection between spike and the base is very loose. So use superglue to assemble the spike. Alternatively you can scale spike up a bit, or base a bit down.

The assembled spikes are then glued to the place with double sided tape.

I can make a version that uses screws, but i discourage such a connection because a screw is difficult to make water-tight.

Please use UV stable plastics and depending on your color and climate choose right version of PLA in case you would use PLA. Direct sunlight could cause warping

You can print several spikes or several bases in one print. Sorry for the strange orientation of the modes.

Please feel free to DM any questions