To provide a fired matter supporting body which enables the simple and rapid adjustment of supplying pins with high exactness.
This fired matter supporting body for dental technical working has one sheet of supporting plate 10 which has plural holes arranged to one pattern and one sheet of tension plate 14 which is flatly adjacent to the supporting plate 10 and may be changed in its position with respect to the supporting plate 10. This tension plate 14 has the pattern of holes 16 coinciding with the pattern of the holes of the supporting plate 10. The fired matter supporting body is provided with a tension device which consists of a tension cam having a cam circumference for moving the tension plate 14 relative to the supporting plate 10 and holding the tension plate 14 in the moved position in order to tighten and fix the supporting pins 32.
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