I have a woodworking planer, the hardness is not enough, how can we strengthen the hardness of it
Because you have to first find out the cutter material, according to the material selection process suitable for heat treatment, the method of equipment and experience is not made by amateurs. Just to use words suggest replacing other planes.
Strictly speaking, heat treatment is necessary, but it is of little significance to strengthen hardness if it is only for bad use
