These are brass rivets (0.8 and 0.6 mm) that I burnished. Look here: https://knupfer.info/shop/index.php/nieten-nietenschraub/feinnieten-halbrundkopf.htmlA very special construction with the mast foot
May I ask how you made the bolts? Are these nails with a round head? Or did you treat them with a burr?
Greetings
Lucius