CT-9 Replacement Iron

This precision ground, A-2 tool steel plane iron for the CT-9 is cryogenically tempered and will keep a razor edge much longer than traditional tool steels. (Cryogenic
tempering is a supplemental process to heat/quench tempering where tool
steel is cooled below -300 degrees Fahrenheit in liquid nitrogen for
several hours, which completely and thoroughly alters the molecular
structure of the steel. The results are dramatic! The fine grain
structure of the metal allows for extremely sharp edges that stay sharp
much longer than traditional processes.) After tempering, the back is lapped. This mirror surface will never need to be sharpened! The primary bevel is ground to 25 degrees and a final 30-degree micro-bevel is achieved with an 8000-grit water stone. This plane iron is ready out of the box.