Schematic diagrams of the 3D-printed col- lar showing how carotid pressure is applied
The mannequin below shows the collar with velcro backstrap. The pressure points from the two ‘screws’ are easily positioned to match the location in the neck of the carotid bifurcation. Pressure is applied by tightening both screws until the point when cerebral anoxia and loss of consciousness results.
Note - because the applied pressure can only be increased slowly, there is a risk that the desired baroreceptor cardiac effect may not be produced. (See the Peaceful Pill forums for more detailed discussion on the pros and cons of 3D-printing.)
The mannequin wears the 3D-printed Korean collar with velcro back-strap