The GRS System 3 is a lower cost alternative to the more powerful and
expensive GraverMax system. You can still engrave and do hammering
operations with the System 3, but the GraverMax has a wider range of
powers (and handpieces) and, imho, is definitely worth the extra
cost, especially with the new 901 handpiece!
I still use the hand method for bright cutting and careful detail work
ENGRAVED PIN HEADS - Here’s an example which illustrates why the
GraverMax is perfectly suited for precise detail:
http://www.masterengraver.com/901/pinheads.htm
Sam Alfano
Exhibition Grade Hand Engraving