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Bowls 101

Re-Turning Rough Bowl Blanks

When a bowl is roughed out of green wood and then dried in a kiln or any other manner it warps out of shape, usually to an oval shape. To re-turn this blank it is necessary to make the tennon or spiket round again.
The method I use is as follows:
I mount a round wooden block, as shown on the left, in my chuck, as shown on the right ... I tape a piece of sheet rubber on the face of the block to keep it from slipping.

The rough bowl blank is then Jam chucked between the wooden block and the tail piece, with the tail piece centered in the knob left sticking out from the original green turning. DO NOT remove this little knob until the last thing you do when the project is finished. This way you can re-center when you need to.

While the blank is Jam chucked I turn the outside of the bowl to a point where my final shape, any design and a sanding through 120 grit is complete.
When the outside is to the above decribed point, reverse the bowl and mount the re-turned tennon in the chuck and turn the inside of the bowl to a complete finished shape.

Sand through 320 grit.

At this point, turn the bowl back around and Jam chuck as before with a soft cloth or soft paper towel between the inside and the wooden block. Turn the foot to your desired shape and sand to feather the foot design into the sides of the bowl. Finish sanding the outside walls to 320 grit or finer.

There are many ways to do this but this is one way that works for me.

Have Fun,

Dale

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