Pastor Dewald explained to Audrey and I that Pottery making has been around a
long time. It is referenced many times in the Bible. Chapter 18 of Jeremiah,
Verses 1-6 reads as follows:
“The word which came to Jeremiah from the Lord, saying, Arise, and go down to
the potter’s house, and there I will cause thee to hear my words. Then I went
down to the potter’s house, and, behold, he wrought a work on the wheels. And
the vessel that he made of clay was marred in the hand of the potter: so he made
it again another vessel, as seemed good to the potter to make it. Then the word
of the Lord came to me, saying, O house of Israel, cannot I do with you as this
potter? saith the Lord. Behold, as the clay is in the potter’s hand, so are ye
in mine hand, O house of Israel.”
Pastor Dewald grew up south of Ashley, North Dakota. He is a largely self
taught potter except for a two week course taken with a potter in Manitoba,
Canada. He attended Wartburg Seminary in Dubuque, Iowa. While interning at
Mason City, Iowa, he bought his first kiln. Since then Pastor Dewald has
acquired three kilns that he uses. The smallest kiln is used in firing the
test tiles. The two larger kilns are used to fire his bowls, vases, and other
utilitarian pottery.
Before a bowl or vase is fired in one of the larger kilns, the potter needs to
make a test tile. This test tile is made from the same clay mixture as the
completed bowl or vase will be. Each of Pastor Dewald’s test tiles measure
about 10 centimeters long, 1 inch wide and about 3/16 of an inch thick. An
example is tile number 225. Pastor Dewald’s notebook states that this tile
contains a special mixture of clay from south of Wilton, some Hettinger bottom
clay, 4 dry tablespoons of F. dark clay from north of New Town, some Bentonite
clay, and also some clay from Wilton bottom. After this tile is fired it is
kept for future reference. His record book also records the temperature that
the test tile was fired at.
Other test tiles also show what the glazes look like and again the record book
contains the information of what the glaze is made from. A glaze by definition
may be a translucent layer that coats pottery with a decorative finish. Even
though Pastor Dewald uses some commercial glazes, the most interesting ones are
those that he had developed. These glazes make innovative use of clay slip
mixtures. Clay slip is referring to a clay that is mixed with water until it
becomes somewhat soupy. This mixture is also strained to insure purity. This
slip can then be used to decorate the pottery or ceramic bisque. Clay slip may
be used that has two colors of clay such as a light color and also a darker
color. Pastor Dewald has several beautiful pottery pieces decorated in this
technique. Green ware or unfired pottery/ceramic becomes bisque when the piece
is fired for the first time. The color of the bisque is determined by the color
of the clay. The pottery can then be decorated with either a commercial glaze
or one developed by the potter.
He has used North Dakota clay from many locations, including clay from the
Underwood Coal Mine, clay from a hill west of Mandan, Bear Den Butte, and also
Linton. He has also used native clays from eastern Montana and Minnesota. Not
only does he dig his own clay but he also processes it. The clay is kept in
separate containers along with meticulously kept records. All the native clay
that is dug in North Dakota has impurities and must be carefully prepared over
time before it can be used. He uses various sized flour sifting screens in
eliminating impurities from the clay.