Ryan, I worked on the engraving off and on with other projects so it is a little hard to tell how long it took. It is a slow and deliberate process that I enjoy. I do not doubt that someone who is skillful and dedicated and engraves often would be much more efficient than I am in terms of speed. I use a Wepplo etching press, manufactured in Bloomington, MN. It has a 18″ x 30″ bed and 5″ diameter geared roller.
The School of the Transfer of Energy 
How long did it take to engrave? Its cool! What do you use to do the pressing? Is it a big hand-cranked roller?
Ryan, I worked on the engraving off and on with other projects so it is a little hard to tell how long it took. It is a slow and deliberate process that I enjoy. I do not doubt that someone who is skillful and dedicated and engraves often would be much more efficient than I am in terms of speed. I use a Wepplo etching press, manufactured in Bloomington, MN. It has a 18″ x 30″ bed and 5″ diameter geared roller.