Tool assembly configured for Swiss machining

A holder comprising:

• opposing holder first and second sides defining a first side direction from the holder second side towards the holder first side, and a second side direction opposite to the first side direction;
• opposing holder front and rear ends defining a forward direction from the holder rear end towards the holder front end, and a rearward direction opposite to the forward direction side direction;
• opposing holder top and bottom sides defining an upward direction from the holder bottom side towards the holder top side, and a downward direction opposite to the upward direction;
• a holder pocket located at an intersection of the holder first side, holder front end and holder top side, the holder pocket comprising:
• a pocket side abutment surface extending along the holder first side and facing the first side direction;
• a pocket bottom abutment surface located downward of the pocket side abutment surface and facing the upward direction;
• and
• a pocket rear abutment surface located rearward of the pocket side abutment surface and facing the forward direction;
• and
• a holder clamp located at the holder top side, the holder clamp extending over the pocket side abutment surface and comprising:
• a resilient hinge portion;
• a clamp portion comprising a clamp top abutment surface facing in the downward direction;
• and
• an intermediary portion extending from the resilient hinge portion to the clamp portion;
• wherein:
• the resilient hinge portion being normally-closed such that the resilient hinge portion is configured to resiliently bias the clamp portion downwardly.