The Radiusmaster II is the latest creation from the inventive mind of John Price. The original Radiusmaster was a innovative machine with five different wheels on one belt. John was recognized on the ABC television show "The New Inventors" for his invention. John has taken on board much of the feedback from the original Radiusmaster and made some performance improvements in the second version.
I was fortunate enough to pick up two of the new Radiusmaster II's from John's factory in Sydney. What an amazing workshop! John works with a small staff in making each of the machines onsite. His equipment and jigs are fascinating - presses and benders, mill, lathes and all kinds of jigs and fixtures to make the parts. Especially interesting was the old Radiusmaster on a 45 degree angle used for grinding the rubber wheels to size. A platen holds the wheels square against the belt, but the belt drifts across the wheel, ensuring no one part gets too hot to melt the rubber. You can see the man's inventive brain hard at work in the shop.
The two new variable speed Radiusmaster II's join an old Radiusmaster (fixed speed) and a variable speed Select-a-Rad in the workshop. I retired the two 72" D J grinders, so now I am on just one belt size for all my grinders.