Mike,

You're right. That's definitely an advanced procedure for pantograph engraving and not one I would recommend, to anyone without a lot of practice, in working without a standard means of depth control.

The fact remains, for someone looking to get their foot in the door, there's a lot of relatively inexpensive pantograph equipment out there.

Many jobs don't require "Stunt Engraving" and I like doing those too. :-) 

It is so clogged that you cannot see the pile of 's' in the equation.

It surely cannot be that I am blind. :-$ 

Philadelphia, PA (Really Bensalem)

When you finally understand it completely... it changes.