The edge is made in the heat-treat, not the forge. A 2x72 belt grinder to shape the bevels flat and true, a quench tank with fast quench oil, a tempering oven to draw the hardness back to tough, and the files for the final hand-fit. Harden the edge, temper the spine, and the blade holds an edge without snapping.
Plans
Choose a plan that fits your needs and budget
Item List
5Grinding
2 items
Heat-Treat
2 itemsFinishing
1 items| Item | Category | Specs | Qty | Price | Link |
|---|---|---|---|---|---|
 | Repair Tools | Files3 CutBastard/2nd | 1 | $40 | View Shop |
Plan Totals$785
FAQ
Common questions about this kit
Why a 2x72 grinder?
It is the bladesmith standard — long belts run cool so they do not burn the steel, and the variety of grit and belt types (ceramic, Scotch-Brite, leather) does everything from profiling to a mirror polish. Nothing else comes close.
Why quench in oil not water?
Oil cools steel more gently, reducing the shock that cracks a blade. Water quenching 1095 is a recipe for a snapped blade. Use a fast quench oil (like Parks 50) heated to 120F.
What does tempering do?
Quenching makes the steel hard but brittle (glass-like). Tempering at 400F for two hours trades a little hardness for toughness, so the blade bends instead of shattering. Harden the edge, temper for the spine.
How do I test the hardness?
A file should skate across a hardened edge without biting — that is the "file test," roughly 60 HRC. For precision, a proper hardness tester, but the file test is enough for a beginner.
User Reviews
5.0 / 5.0
Blade grinding and my EDC knife share the edge-is-the-heat-treat gospel — a 2x72 grinder and a file test are the same religion as my sharpening stone. Harden the edge, temper the spine, agreed.