Shelf Pin Drilling Jig: 3D Print a Cabinet Shelf Jig for Perfectly Even Pin Holes

Inside a warm-toned wooden bookcase cabinet in bright workshop light

Introduction Adjustable shelves are only adjustable if the pin holes line up. Drill one row a few millimetres off from the row opposite it and every shelf rocks, tips, or sits at a visible slant — and a bookcase full of slightly crooked shelves never stops annoying you. The fix is not a steadier hand. … Read more