NPK PH4 - Chisel Tool Resharpening

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TOOLS
CHISEL TOOL RESHARPENING
Worn chisel tools can be re-sharpened by machining according to
the dimensions below. DO NOT hardface or sharpen the tool point
with a cutting torch! Re-sharpen only with a lathe or milling
machine using sufficient coolant.
HAMMER
MODEL
d21 d16 (ref)
in (mm) in (mm)
PH1
.39 (10) 2.24 (57)
PH2
.39 (10) 2.60 (66)
PH3
.39 (10) 2.99 (76)
PH4
.79 (20) 3.39 (86)