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Dome Plasticity Fixture

The Dome Plasticity Fixture (Plastometer) is a grain break apparatus used to measure the set-in lasting of upper leather. The device complies with design requirements set out in BS 3144, Section 10.

A specimen is clamped at the rim by a ring. By turning a knob, the operator presses the leather into a form of a spherical cap with an area 115% of the free disk. The extended form is maintained for a measured time, after which the cap is released.

Schap offers Dome Plasticity Fixtures with several diameter domes:

  • 70mm per BS 3144, Section 10, Figure 19
  • 200mm custom sphere
  • Custom diameters are available to meet various standards

Schap proudly manufactures the Dome Plasticity Fixture in the USA.

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