Foldable utility knife

This is a 3D-Printable utility knife with retaining spring to keep it open or closed.The body is completely 3D printedIt accepts standard trapezoidal blades ######################################################################################DISCLAIMER: Knives are not toys and carry a significant risk of injury. Especially ones which are mainly made of 3D printed plastics###################################################################################### For assembly required hardware:1x M4 nut1x M4x10 hex screw5x M3 nut3x M3x6mm hex screw2x M3x10mm hex screwAssembly steps:(Use the CAD image provided as reference)Insert the hex nuts into their corresponding cutouts (light press fit)Set the spring into it's recess and screw it down using one of the M3x6mm screwsSet the blade holder onto the lower case (in its closed position)Set the printed washer onto the joint (small chamfer facing upwards)Put the upper case on top of the assembly (make sure the washer stays in place)Insert the