4. BENDING: THE PURPOSE OF THIS TEST IS TO SHOW THAT THE APPLICANT IS ABLE TO HEAT
TREAT A KNIFE WITH A SOFT BACK AND A HARD EDGE.
The bending of the blade is the final test. Safety gear should be worn. At the discretion of the
applicant or the Master Smith, the edge may be dulled prior to bending. The Master Smith
will mark a line across the width of the blade approximately three (3) inches from the tip of
the blade. The blade will then be inserted into a vise, tip first, such that the blade is placed
into the vise up to the mark on the blade. If the vise jaws are rough, smooth metal inserts
may be located on each side of the clamped portion of the blade to protect the blade,
when bending the test knife. The blade shall be bent by force applied to the handle. A
leverage device, such as a pipe may be used as long as it does not pose a safety risk. The
use of such a device is at the sole risk of the applicant and at the discretion of the
supervising Master Smith. The applicant will then bend the blade ninety (90) degrees. The
supervising Master Smith will signal the applicant when the ninety (90) degree angle has
been reached. The blade is allowed to crack at the edge on bending but not beyond
approximately one third (1/3rd) the width of the blade leaving two thirds (2/3rds) of the blade
intact. However, if any part of the blade chips or any part of the blade or tang breaks off,
the applicant fails. Because of the many variables in the size, geometry, and temper line of
the blade, the Master Smith using his/her judgment, shall determine if the extent or location
of the fracture line is acceptable. The decision of the Master Smith is final.
This is straight out of the ABS Journeyman test guidelines.