During a discussion about this theme Tobias, lens shave service in germany, gave the special tip:
cable tie with 7,5 millimeter.
This helps a lot! Thx Tobias.
This is how I did it. Very precise. With patience, it takes about 5-10 minutes or so to shave off the hood.
Snip the head off of a zip tie and place the headless body coiled up inside the stock lens cap and you are finished.
Disclaimer: No lenses were harmed in the production of this picture.