I'm looking for a 3D model of a folding utility knife with a chalk line integrated into the back of the knife design. The prototype will be printed using PLA. Essential Features: - Blade removal capability - Chalk line integrated in the back with a real in spool. It would only have 16 feet of line, so a much smaller reel and line than a normal chalk line, it should be able to fit in the back of the knife handle. Below I will attach one of my drawings, hope that helps. Ideal Skills & Experience: - Proficiency in 3D modeling software - Experience with designing for 3D printing - Familiarity with tool design, especially folding mechanisms