I think you’ll find using this type of pantograph engraver very
difficult to trace around drawings freehand. By virtue of the
reduction aspect (mechanical linkage) of the principal of this type
machine, forces at the cutting end are amplified at the tracing
stylus end and make it very tough to follow drawn lines.
There are a couple of ways to approach it, though.
Lay a thin (1/16") piece of plexiglas or acetate over your
drawing and using a hand engraver or a similar tool, cut a shallow
groove following your design.
Send your drawing off to a photo engraving service bureau and
have a master template photo engraved in magnesium, zinc, or brass.
This will give you a V groove tracing pattern to follow.
This machine really requires some kind of groove for the stylus to
track in to accurately engrave.
If you’re interested in a used 2-D Preis super well built table top
rotary (versus scratch) engraving pantograph, I’'ve got one for sale
only if you’re willing to pick it up in Albuquerque. Comes with 3
sets of brass fonts, holders, and have a seperate cutter grinder for
sharpening available. I used 2-D and 2 1/2D pantographs for about 12
years to cut casting masters and molds.
Contact me off line for details and pictures.