Overview & First Impressions
Sgraffito is decoration cut through a wet top coat to reveal a contrasting layer underneath. It is done while the lime is still green, in a window of a few hours, and once the plaster sets the line is permanent. That timing is what makes the tool choice matter: the blade has to cut a clean V through a slightly gritty coat, follow a drawn outline without tearing, and keep that edge through a wall of work without being resharpened.
Materials & Construction
Lime render is mildly abrasive and mildly alkaline, and it dulls an edge faster than most wood. D2 steel is the sensible answer for anyone cutting it regularly: high carbon and high chromium, with a wear resistance that keeps a working edge through a long session. Tenable knives run it at a hardness that holds up without becoming fragile, and the blackwash finish hides the lime staining that any plaster tool picks up within a week.
Design & Details
The Bomber is a liner lock folder with a polymer handle and a broad drop point. For scoring work the critical dimension is the tip: fine enough to start a line accurately, strong enough not to snap when the plaster resists. The liner lock gives a solid open position for a cut that is often made at arm's length, and the handle shape keeps the knife from rotating in a wet hand.
Real-World Use
The sequence is simple and unforgiving. Draw the design, wait for the coat to take up, then cut the outline in single confident passes with the blade angled so the V opens cleanly. Clear the waste with a flat tool, then cut the next band. A knife that tears rather than slices leaves a ragged edge that shows in raking light, and raking light is how sgraffito is always viewed.
Ownership Notes
Plasterers work with one hand on a trowel and the other on the wall, which is why a folding knife that closes and drops into a pocket is the practical carry. Folding knives also keep lime dust out of the mechanism while closed, and lime dust is the enemy of every pivot. EdcMall lists the Bomber in several handle colours, which is useful on a site where tools migrate between trades. Plasterers keep EDC knives in a tool bag next to the trowels, and folding knives with a broad tip are what actually get used to score a line on a wall at arm's length.
Who Is This For?
Buy it if you cut abrasive, slightly gritty material and want an edge that lasts a session. It suits plasterers, renderers, decorators and anyone doing decorative lime work. Skip it if you want a delicate slicer for paper or cloth; D2 is a wear-resistance steel and a broad bevel is a scraping geometry, so fine fibre work is not its strength.
Final Verdict
The Bomber is a site knife that happens to be well made. D2 steel keeps a working edge through abrasive lime, the broad tip starts a line without wandering, and the liner lock holds solid when a cut is made at full reach. For sgraffito, where a single torn line is permanent, that reliability is the whole point.
