Replacement Iron for HP-12 Dual Angle Bench Plane
This robust replacement iron for the HP-12 is made of A2 tool steel and hardened to Rc60-62. It is 0.225" (5.7mm) thick and a full two inches wide (50.8mm). It is ground to 30 Degrees with a 5 Degree micro-bevel on one end and to 25 Degrees with a 5 Degree micro-bevel on the other end. Mounted in the HP-9v2 with its 12 Degree bed, the result is a 47 Degree bevel for normal planing and a 42 Degree for end grain.
The bottom of the iron is lapped to a mirror finish (RMS .5 or better) and requires no further work by you to flatten it.