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Original Opus1 Design with Center Wheel Adjustment
Center Thickness Adjustment
The Center Measurement of the gouged piece of cane is regulated by rotating the CENTER ADJUSTMENT WHEEL located at the front of the carriage. This screw is actually an adjustment knob that regulates the position of the stop wheel on the carriage. There are indications on the face of the knob to show the direction that it should be turned to produce a specific change in the measurement. Turning the knob slightly counter-clockwise will increase the center thickness, while turning the knob slightly clockwise will decrease the center thickness of the gouge.
The concept of having an adjustable wheel on the front of the carriage to manipulate this measurement is not original to the Opus1 Gouger; however, you will notice, upon closer inspection, that its design and actual function is unique. Other machines on the market with this type of adjustment have the wheel mounted concentric to the knob with the axle of rotation drilled off-center. Rotating the knob then produces the desired effect of changing the height of the carriage since the wheel is effectively moved up or done. The drawback here is that the knob is displaced along with the wheel. Inadvertently bumping the knob could potentially alter the center measure.
The Opus1 has the axle concentric to the knob. The wheel is mounted on a cam that is machined to be offset from the axle of the knob. This allows the wheel to move up and down to change the height of the carriage while keeping the knob concentric to the rotation. This is a much more stable configuration.