Proof & LoafBread Lame vs Razor Blade vs Knife: What to Score Sourdough With
You can score a loaf with almost anything sharp. Here’s how a lame, a bare razor blade and a kitchen knife actually compare, and when each is worth using.
How we chose: we compared manufacturer specs, independent test-kitchen results and owner feedback. We haven’t hands-on tested these products ourselves. Our methodology.
Quick answer
- Best overall: a bread lame. It’s a razor blade on a handle, so you get the same clean cut with more control and your fingers away from the edge.
- Cheapest that works well: a bare double-edge razor blade, held very carefully, or slipped onto a coffee stirrer.
- In a pinch: a very sharp, thin knife or serrated tomato knife. Expect more dragging on wet dough.
- Avoid: dull kitchen knives. Box cutters can work but have thicker blades that cut less cleanly.
Comparison: what to score sourdough with
| Tool | Cut quality | Control | Safety | Best for |
|---|---|---|---|---|
| Bread lame | Very clean (fresh razor blade) | High: handle, set angle, optional curve | Good: fingers off the edge, many have covers | Anyone baking regularly |
| Bare razor blade | Very clean | Low: hard to hold a steady angle | Poor: exposed edge on both sides | Trying scoring before buying a lame |
| Kitchen knife | Fair: tends to drag and tear wet dough | Medium | Familiar | Firmer, cold dough; emergencies |
| Box cutter / utility knife | Fair to good | Medium | Medium: use a fresh, clean blade only for food | Occasional use |
| Kitchen scissors | Snips, not slashes | High for snips | Good | Decorative “wheat stalk” snips, rolls |
Bread lame vs razor blade
The blade is the same: most lames take standard double-edge razor blades. The difference is the handle. A lame holds the blade at a consistent angle, lets you curve it for an “ear,” and keeps your fingertips away from the edge. A bare blade cuts just as cleanly, but it’s small, slippery with flour, and sharp on both sides, which makes long confident strokes harder and accidents more likely. A popular hack is to thread a blade onto a wooden coffee stirrer for a makeshift lame.
Bread lame vs knife
Even sharp kitchen knives have a thicker edge than a razor blade. On sticky, high-hydration dough the blade tends to drag, pulling the skin instead of slicing it, so the score seals up or tears. A knife works better on firm, cold dough straight from the fridge. If you use one, pick the thinnest, sharpest blade you own, and make one quick stroke rather than sawing. A serrated tomato knife can grip the surface better than a dull straight edge.
Bread lame vs box cutter
A utility knife blade is sharp and has a handle, so it’s a reasonable stand-in. The blade is thicker than a razor blade, so cuts can be slightly less clean, and it should be a fresh blade you keep only for food. Don’t use one that has been cutting cardboard or tape.
Our take
If you bake more than a few loaves a year, a lame is one of the least expensive tools that makes a visible difference. Try a bare blade or a knife first if you want, but most bakers find the control of a handle worth it.
Baker of Seville Artisan Bread Lame
America’s Test Kitchen’s overall winning lame. A simple screw sets the blade straight or curved, and it comes with a storage case.
- Straight or curved blade
- Secure blade changes
- Storage case
- A bit heavy, per ATK
Wire Monkey UFO Bread Journey Lame
ATK’s pick for intricate patterns. The round body gives a lot of control once you get used to it.
- Exceptional control
- Retractable blade
- Blade changes can be fiddly
Wire Monkey Goose Lame
A traditional stick-handle lame for bakers who want a conventional grip.
- Familiar handle shape
- Fewer independent reviews than the picks above
Personna Double Edge Razor Blades, 100 Count
Standard double-edge safety razor blades, the type most lames use. Fresh blades are what make a clean score, so a box of spares lasts a regular baker a very long time. Check your lame’s instructions to confirm it takes double-edge blades.
- Fits most lames
- Swap blades as soon as they drag
- Very sharp: store and dispose of used blades safely
Scoring tips that matter more than the tool
- Score cold dough. Dough from an overnight fridge proof is firmer and scores far more cleanly with any tool.
- Dust the top. A light dusting of rice flour shows your scores and reduces drag.
- One confident stroke. Hesitant, repeated cuts tear the skin.
- Shallow angle for an ear. Hold the blade at roughly 30° to the surface for one long cut, about a quarter to half an inch deep.
- Dispose of blades safely. Keep used blades in a lidded tin or blade bank, not loose in the trash.
Still choosing a lame? See our full best bread lame guide. Slicing after the bake is a different job entirely; see the best bread knives for sourdough.
Frequently asked questions
Is a bread lame better than a razor blade?
The cut is the same, since most lames hold a standard razor blade. The handle gives a steadier angle, lets you curve the blade, and keeps fingers away from the edge.
Can I score sourdough with a knife?
Yes, in a pinch. Use the thinnest, sharpest knife you have, score cold dough, and make one quick stroke. Expect more drag than with a razor blade.
Can I use a box cutter to score bread?
A fresh utility blade kept only for food can work. It is thicker than a razor blade, so cuts may be slightly less clean.
What blades go in a bread lame?
Most lames take standard double-edge safety razor blades. Check your lame's instructions before buying replacements.
What is the best bread lame alternative?
A double-edge razor blade threaded onto a wooden coffee stirrer is the classic homemade lame. Kitchen scissors work for decorative snips.
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