Blade, Plane, for #4 and #5 Bench Planes, 50 x 3.1mm, High Speed Steel, Cryogenically Treated, #703440
Description
HERDIM - GERMANY
Due to their high hardness (approx. 64 HRC) and toughness, these plane blades are resistant to careless handling, which often occurs during everyday workshop tasks or on-site assembling. This steel also retains its hardness during machine dry grinding.
Ideal for:
Exotic hardwoods, which frequently contain mineral particles
Edged-glued wood and particle boards with hard synthetic resin components
The cryogenic (very low temperature treatment) process increases the service life and makes the blade cutting edge finer and sharpener. The back faces are processed by a special method to obtain exact, flat surfaces with minimal grinding marks. Both methods (cryogenic and back face grinding) allow the sharpening of the hard steel with minimum time expenditure.