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Bowl Gouge Bounce

Al, another thought comes to mind.... Ever take a pencil to the outside of your bowl, when finished turned, to lightly mark it and see just how round it is??? With my gouges, I can get maybe half a rotation with an continuous like. With a shear scraped outside, I can get 75 to 90% of a continuous line. Almost never a solid line all the way around. This is with a very light touch on the pencil, and as high of a rpm as when I am turning.

Odie, ever try this one???

robo hippy
 
robo hippy said:
Ever take a pencil to the outside
Click to expand...

I do something similar when centering reverse chucked hollowforms turned on a faceplate.
Sort of a trial and error method. Put the center as close as I can by inspection.
Then lightly touch the waste wood to which the faceplate was attached.
A line will be drawn part way round the off center wood. Put the center of the line straight up and move the tails tsockmcenter toward the line by lowering the piece slightly. Light touch for another line.
Repeat until the line goes 3/4 of the way around. This is good enough but often the line goes all the way round but this is a 4” diameter area.

This recentering is accurate and lets the returning match the surface turned on the faceplate.

I will try this near the rim of a bowl sometime.
I often turn beads on bowls with a spindle gouge - the beads and grooves are even andturningnfeels round. The pencil is probably measuring something in the .001” range.
 
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