this Dagger/Awl/Dibber is meant to be used for self-defence when hunting, making a hole for seeds for gardening. You Can print this with no infill to be used for lost PLA Casting

I used Cura as the slicer A PLA Print Printed on a Ender 3 Pro Used TinkerCad to make this Specs (to print) Layer Height: 0.09mm Shell Thickness: 1.2mm Infill 0% to 100% No supports or Adhesion is required speed 30mm/s

Print with 0% infill For Metal Castin using lost PLA casting You Might need to Do Some Minor Sanding