Knowing Steve and his cunning ways, it is always a must to wear a tinfoil hat to be protected from his spy radio transmitter (integrated into _all_ PalmControls, that's why they cost you an arm and 4 toes).
I engraved two days without a hat and I got irresistible urge to buy two, yes two, of his hovering/anti-gravity vises. Not good. I took a 2 week rehab 100 miles away from closest AirGraver and now I'm back to normal. Almost.
Well, I resisted the vises, but couldn't help buying 2 extra gravers.
I still need constant monitoring...
Actually, the gravers are mine, my dad's and one other guy just starting engraving. All Estonian AirGravers in 20cm radius, that's history!
V