CT-11 30-Degree Accessory Iron

Traditional low-angle smoothing plane irons are ground to 20° plus a 5° micro-bevel, and when seated in a 12° plane, the attack angle is 37°.

That being, it may make sense for CT-11 owners to have an additional iron with an included angle of 30° for use in harder woods. Such an iron would dramatically shorten the sharpening cycles when changing the attack angle to address the nuances of wood.

Five degrees can make an enormous difference in cutting ability depending on the variables. For those of you who understand the value of your time and/or the real nuances of hand planing wood, this additional iron option may be of interest to you.