Variable pressure cutting devices

A cutting device comprising:

• a blade;
• a device architecture configured to hold the blade comprising:
• a pressure body comprising a spring extension and operable to remain rigid in response to a substrate pressing against a portion of the pressure body at a first pressure, and a portion of the pressure body operable to deform in response to the substrate pressing against a portion of the pressure body at a second pressure, and thereby provide variable resistance against the substrate;
• and
• a cutter slot at a first device architecture end defined by the blade and a pressure arm of the pressure body, the cutter slot configured to receive the substrate and operable to open rearwardly toward a second end as the pressure body deforms;
• wherein the spring extension extends from a portion of the device architecture at a first spring extension end in a first direction;
• wherein the pressure arm extends from a second spring extension end in a second direction substantially opposite from the first direction;
• and
• wherein the spring extension and the pressure arm define a pressure body slot;
• and
• wherein the cutter slot is defined within the pressure body slot.