Sphere grinding machine - The Glass Marble Home Pages
The answer is no. Once you have mastered the machine (I wonder if we ever do) you don't have to be there for periods of time. I check on my machines as a general rule about every 15-20 minutes. Sometimes with a big marble that is badly hurt and will require lots of time in the machine, I'll check on it about every hour.Sphere Machines - Kingsley North,A complete line of rock tumblers, rotary and vibratory, abrasive grit and polishing compounds, diamond trim saws, slab saws, lapidary machines, cabbing machines, faceting equipment and accessories, such as diamond discs, tin, ceramic, zinc, and phenolic polishing laps, diamond blades, belts, diamond discs, powders, compounds, faceting supplies,Sphere Grinding Machines | Crusher Mills, Cone Crusher,,Anatomy of a 3-Headed Sphere Machine – Bob's Rock Shop: The The larger sphere making machines produced by E & J Adams Lapidary use springs to tension and load the grinding and polishing cups against the sphere.