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

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Sphere in a Cube Continued from PreviousPage.As shown in Figure 3 the items are: a woodencube of good dry hard wood, a center punch, a scribe, acenter marking device of some type (this is the Vicmarcunit), and an undercutting tool to cut the ball loose fromthe cube. The undercutting tool was made from a 1-1/2inch wide carpenter chisel that was ground to a shape tosupposedly cut the top of a 2-1/2 inch ball. The handleis one of the handles from a Crown Chinese Ball tool.Figure 6. I then drilled three of the sides of thecube, leaving the opposite side from each holeblank for drilling on the lathe.Figure 4. Here I am using the Vicmarc centermarker and the scribe to mark the center onall six sides of the cube. Once the centers weremarked, I used a spring loaded center punch tomark the point for the drill to center on.Figure 7. At this point, I moved to the VicmarcVL-100 lathe with my Vicmarc chuck with thesmall jaws. The jaws will open wide enough togrip the inside of a 2 inch diameter hole. The faceof the jaws were placed against the bottom of the2” diameter hole.Figure 5. I then went to the drill press and using a2- inch Colt Forstner Bit, I drilled a hole ½” deepand then marked the drill with a Sharpe Ink Penso that all holes could be drilled approximately thesame depth.Page 34 More Woodturning June 2010
Figure 10. I’m not ready to make a cut. Theundercutting tool is shown on top of the tool restand with the cube in the background.Figure 8. With the cube mounted on the Vicmarcchuck, I mounted the Colt Forstner bit in thetailstock Morse Taper using the Morse Taperadapter for the drill. I then proceeded to drillthe three additional holes using the oppositepredrilled hole to hold the block.Figure 11. This photo shows the way that I heldthe tool while doing the undercutting. The toolrest and the secondary support that the handle isriding on were designed for making the ChineseBall.Figure 9. With all six holes drilled to a depth of ½inch, I was ready to start undercutting the surfaceof the sphere. I used my Chinese Ball Tool rest,which would give me better control of the tool andprotection for my hand. It also would keep thetool from rotating when a catch occurred, if it did.Figure 12. This photo shows where theundercutting tool had cut into an adjoining hole.[Continued on Page 36.]Page 35 More Woodturning June 2010
Page 3: ContentsBalancing Natural Edge Bowl
Page 6: Questions andAnswers from theIntern
Page 11 and 12: The Penturner’s Cornerby Don Ward
Page 13: Figure 5. The new vail kit.be anoth
Page 16 and 17: Proper Chain Saw File Handles Conti
Page 19: Axes lengths of the ellipse: 250mm
Page 23 and 24: sections did not absorb the finish,
Page 25 and 26: Mike MahoneyNew Video“THE ELIMINA
Page 27 and 28: Tormek BGM-100 Bench Grinder Mountb
Page 29 and 30: More on Colt Pen DrillsGeoff Brown
Page 31 and 32: Figure 4. Tool to make a tapered ho
Page 33: Making a Sphere in a Cubeby Fred Ho
Page 37 and 38: Figure 17. At this point, I mounted
Page 39 and 40: New Water Trough for Tormekby Jeff

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