seriousdetecting.comAnswer
Jun 01, 2026 - 02:14 PM
Yes, you can sharpen the King of Spades blade in the field using a mill xxxx file or a coarse sharpening stone. The heat-treated steel holds an edge longer than mild steel, but after extended use in rocky soil, the cutting edge will dull. File at the original bevel angle with smooth strokes from the center outward. Avoid grinding wheels in the field, as overheating the steel can reduce the heat treatment's effectiveness. A few minutes with a file every few days of heavy use keeps the blade cutting efficiently through compacted soil and root mats.
