Printed in medialab Prado during Objects en Common,
merged with a key, to open the cervix port to the innerbodyhttp://constantvzw.org/site/-Objets-en-Commun-.html
(screw 90% + nut2) but screw breaks easy, not tested in real life yet.
PLA in stead of ABS, as it mostly available in fablabs,
surface is more rough