Pat Percival of NorthCoast Knives posted this simple phototutorial demonstrating how he makes decorative handle pins for his custom knives by nesting telescoping metal tubing of various sizes, shapes, and materials. These are known as “mosaic” pins among knifemakers, and although Pat only mentions it in passing, it is generally agreed that the voids in the design need to be filled with some kind of resin, which is often epoxy with coloring agents added to taste.