Bruce Girrell on mon 24 sep 07
James Bowen wrote:
> Why shouldn't coning up and down while centering (wheel wedging) be
> sufficient to align the clay particles and provide the potter with a well
> centered lump to begin throwing?
That's what I do all the time. It is extremely rare for us to get any
s-cracks, or any other cracks for that matter.
I always place the clay such that the axis of pugging is perpendicular to
the axis of the wheel head shaft. In other words, if the clay were a hunk of
firewood, it would be lying down on the wheelhead, not standing on its end.
Doing so requires that I reshape the clay into a form suitable for centering
which I do by dropping and patting the clay on the bat until it is round
enough. I take care to avoid air inclusions while doing so.
When coning, I mush the clay up and down until it no longer feels ropey,
usually three or four times. I find this homogenization step is a big help
in achieving a uniform wall thickness.
Bruce Girrell
in *warm* northern Michigan, waiting for Fall
Just threw some pots yesterday after a major hiatus.
Couldn't believe how awful I did on the first one. It's like I forgot how to
throw.
Later ones did better, though.
May Luk on wed 26 sep 07
Hiya:
Coning. Oh, I thought it's called Patrick Swayze's Carrot. That's what I learnt from my first throwing class. Those were good times.
Regards
May
>>>>>>>>>>>>>>>>>>>>>>>>>>
[...]When coning, I mush the clay up and down until it no longer feels ropey,
usually three or four times. I find this homogenization step is a big help
in achieving a uniform wall thickness.
Bruce Girrell
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