Meat left on the bone is a cost you pay every week

Why butchery blades go blunt differently from kitchen ones

In a butcher’s shop the blade does not work against a board but against bone, gristle, sinew and stainless work surfaces. That is exactly where the cutting edge fails fastest. A boning knife is run along the bone the whole time, and every contact of steel against bone rolls or chips the edge a little, while a skinning knife works in fat and salt, both of which attack steel. Frozen or over-chilled product loads the edge as a series of small impacts rather than a cut, which is why harder steels come back chipped. Volume does the rest: what a kitchen gets through in a week, an operation cutting daily gets through before the morning break.

Meat left on the bone is lost yield

This is the one part of sharpening that can be measured without relying on feel. A blunt knife does not follow the bone, it goes around it, because nobody can steer a blade accurately while having to press. The residue on any single piece is small; at weekly volumes it adds up to kilos, and to money already paid at purchase. The same force costs elsewhere too: a tired wrist works more slowly and less accurately towards the end of the shift, and a slip in a cutting room nearly always ends on the other hand.

What the damage looks like

Turn the edge towards the light and look straight into it. A bright line means the edge is gone; a row of bright dots means chipping from bone or clips. On boning knives you often see that the blade has become narrower in the middle than at the tip, which is the mark of freehand sharpening without a controlled angle. A blue or grey tint along the edge means overheating: steel like that has lost its hardness for good and will not hold an edge again, and no later sharpening repairs it.

Mincer blade and plate are a matched pair

A mincer does not cut by force but by blade and plate touching across their whole face. Once that contact is lost, meat gets into the gap between them, where it is crushed and warmed; the mince comes out pasty and the fat smeared. Blade and plate are therefore worked together and stay as a pair; a sharpened blade against an old plate, or the reverse, often makes the problem worse. If you rotate several sets, mark them so they do not get mixed up.

What sharpening restores

Every blade goes through assessment first: the state of the cutting edge, the depth of any chipping, and the angle the maker gave the tool. No more material is removed than the edge demands, because every unnecessary pass is a month off the working life of a knife that in a butcher’s shop is sharpened often. Work runs from coarse to fine grit, at a controlled angle and with cooling. The burr is removed and the bevel finished by polishing, because a smooth edge tears less in soft meat and drags less on skin. Anything past saving — a blade ground away to nothing, a cracked bevel, overheated steel — you hear about before the work, not after.

Before you drop the tools off or post them

Wash the blades, degrease them and wipe them completely dry: residue does not belong in the workshop, and damp inside a parcel means rust. Sheath every piece individually with stiff card folded over the cutting edge or a rigid guard; never put tape on the edge itself, and do not send pieces as a bundle, because steel against steel in transit chips edges. Enclose a note with your company name, contact and a list of the contents. You either bring the tools to the workshop at Ferrarska ulica 14 in Koper by prior arrangement through +386 51 659 600 · igor.komadina@t-2.net, or post them from Slovenia, Croatia and Italy. There is no collection from your premises and no sharpening on site.