On the Ngraver system, it is a good piece of equipment and a good tool to learn with. As far as the flex shaft being in the way, it is designed to hold the graver at the angle we use for engraving. In other words, the piece being engraved is turned INTO the graver, not to chase the graver along the lines. It seems some forget that rule, whether using air assisted or mechanical assisted tools. Just my take on the discussion.