Balancing Natural Edge Bowls Questions and Answere The Pen ...

Sphere in a Cube Continued from PreviousPage.The tool had cut into all four holes on adjacent flatsurfaces.Figure 13. Once I had undercut on two oppositesurfaces, I installed a 2 inch diameter by ½ inchthick piece of Styrofoam that was cut from somescrap I had on hand. I used a 2-inch hole saw tomake the foam inserts.Figure 15. At this point, I used an air tool with acarbide cutter to grind away the really high placesto make the ball a bit more round.Figure 14. This photo shows that the piece cutloose inside the cube is not really spherical inshape. I’m contemplating that if I should decideto make another one of these that I’ll design aswinging jig that would perhaps allow the cuttingof a more perfect sphere.Figure 16. I then remounted the ball betweencenters on the Vicmarc VL-100 with a block underthe cube to allow the ball to rotate freely insidethe cube. Now as shown, I used a 3/8 inch spindlegouge to turn the high spots off and make the ballmore round. This required mounting each of thesurfaces of the ball between centers and turning itas round as possible.Page 36 More Woodturning June 2010