A portion of a cutting device of a crafting apparatus comprising: a support rod; a blade housing including a blade arranged opposite a workpiece support surface; a support member that supports the blade housing, wherein the support member is movably-connected to the support rod; a support member moving device connected to the support member that drives movement of the support member relative the support rod in two directions including: a lifting direction for lifting the blade away from the workpiece support surface; and a cutting direction (Z') for driving the blade toward the workpiece support surface, and at least one spring (126, 128, 134) that connects the support member moving device to the support member, characterized in that the at least one spring (126, 128, 134) includes: a first spring that provides a lower spring constant at lower cutting forces for the blade when the support member moving device drives movement of the support member in the cutting direction (Z'); and a second spring that provides a higher spring constant at higher cutting forces for the blade when the support member moving device drives movement of the support member in the cutting direction (Z'). a support rod; a blade housing including a blade arranged opposite a workpiece support surface; a support member that supports the blade housing, wherein the support member is movably-connected to the support rod; a support member moving device connected to the support member that drives movement of the support member relative the support rod in two directions including: a lifting direction for lifting the blade away from the workpiece support surface; and a cutting direction (Z') for driving the blade toward the workpiece support surface, and at least one spring (126, 128, 134) that connects the support member moving device to the support member, characterized in that the at least one spring (126, 128, 134) includes: a first spring that provides a lower spring constant at lower cutting forces for the blade when the support member moving device drives movement of the support member in the cutting direction (Z'); and a second spring that provides a higher spring constant at higher cutting forces for the blade when the support member moving device drives movement of the support member in the cutting direction (Z'). a lifting direction for lifting the blade away from the workpiece support surface; and a cutting direction (Z') for driving the blade toward the workpiece support surface, and at least one spring (126, 128, 134) that connects the support member moving device to the support member, characterized in that the at least one spring (126, 128, 134) includes: a first spring that provides a lower spring constant at lower cutting forces for the blade when the support member moving device drives movement of the support member in the cutting direction (Z'); and a second spring that provides a higher spring constant at higher cutting forces for the blade when the support member moving device drives movement of the support member in the cutting direction (Z'). a first spring that provides a lower spring constant at lower cutting forces for the blade when the support member moving device drives movement of the support member in the cutting direction (Z'); and a second spring that provides a higher spring constant at higher cutting forces for the blade when the support member moving device drives movement of the support member in the cutting direction (Z').