Jon Rolfe is the president of Gearloose Lapidary, LLC -- an innovation leader in lapidary technology. Find him at gearloose.com.
Articles by Jon Rolfe
Retroreflection and Gemstone Brilliance
How is a faceted gem like a retroreflecting prism? Learn to distinguish gemstone brilliance from scintillation and how gem cutters...
How to Make a Digital Readout for Your Faceting Machine
A Digital Panel Meter (DPM) can measure angles to 0.01 degree if a precision instrument potentiometer is used and a...
Retrofitting The Lee Faceter for a Digital Readout
Retrofitting The Lee Faceter for a Digital Readout. This is the second in a series of articles on how to...
Retrofitting The Graves Faceter for a Digital Readout
Retrofitting The Graves Faceter for a Digital Readout. Being a more "finished" unit, there is less flexibility for field modification....
Retrofitting The MDR Faceter for a Digital Readout
This will be a challenge because the MDR machine uses adjustable needle bearings on the trunnion assembly.Retrofitting The MDR Faceter...