07-05-2018, 11:43 AM
EOU,
I wouldn't make a general assumption that any blade's bevel angles are equal. An assumption that a blade's primary grind angles are equal seems more sound, but I still wouldn't count on it for critical applications.
To my mind, an ideal laser goniometer would include a method to hold the knife which meets these criteria:
(1) The position of the knife edge projected onto the X-Y plane, its pitch, and its roll, are all fixed. These are all enforced by a static mechanical fixture or jig.
(2) The yaw of the knife blade is adjustable. Adjustments are done via rotation around an axis passing through the apex of the blade edge, so as to preserve the parameters noted in item (1), above. The mechanism controlling yaw allows adjustments which are quick, precise, and stable.
I second Rupert Lucius' suggestion that you consider bringing a reasonably-priced laser goniometer to market. Based on the design elegance of the PT50A, I'm certain you'd knock it out of the park.
I wouldn't make a general assumption that any blade's bevel angles are equal. An assumption that a blade's primary grind angles are equal seems more sound, but I still wouldn't count on it for critical applications.
To my mind, an ideal laser goniometer would include a method to hold the knife which meets these criteria:
(1) The position of the knife edge projected onto the X-Y plane, its pitch, and its roll, are all fixed. These are all enforced by a static mechanical fixture or jig.
(2) The yaw of the knife blade is adjustable. Adjustments are done via rotation around an axis passing through the apex of the blade edge, so as to preserve the parameters noted in item (1), above. The mechanism controlling yaw allows adjustments which are quick, precise, and stable.
I second Rupert Lucius' suggestion that you consider bringing a reasonably-priced laser goniometer to market. Based on the design elegance of the PT50A, I'm certain you'd knock it out of the park.