Saturday, March 31, 2012

Checking the Stone for Wedge Shape...

Before I grain I try to check the stone for levelness.   I use an inexpensive digital caliper.

After going around the edge about 4 inches apart, I check it again to confirm the measurement.  Then I know if one side is higher than the other.  This can cause a problem when printing.  An uneven or wedged stone will not print evenly and will be difficult to adjust the pressure of the scraper bar.  As Paul Croft says, "Beware of the wedge".

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