Make holes a little bigger using 3.5 mm or 4 mm drill.
Install M3 4.2 mm outer diameter 3 mm length heat inserts.
Attach using M3 4 mm length screws.
Max LED strip length: ~35 mm.
I've used single segment of COB 12V 3000K LED strip which is around 25 mm long.
I've tested 30° and 45° angles and kept the latter one. Adjust it how you like it - balance it between more light and clearer nozzle view.
OnShape:
https://cad.onshape.com/documents/a8985880f87f424246bf6d7a
The author remixed this model.
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