I decided to try some electo-chemical engraving on my Boker Nano. I took off the crappy plastic scale and used a 6 amp car battery charger, vinegar, salt, and a q-tip to do some engraving on the liner. I masked out the skull with some packing tape and an exacto knife. I had to add a washer around the pivot to get the blade to center. It's a beater and it only cost me $35 dollars so I figured WTF go for it. 
