# Why a carpenter's pencil refuses to be round > A rectangular pencil, sharpened with a knife instead of a sharpener — every part of it solves a problem a round pencil creates for itself. August 20, 2026 · https://justog.club/stories/the-flat-pencil A bone tee, shot flat overhead. One carpenter's pencil drawn huge and diagonal across the chest, in graphite grey — not round, but rectangular in section, its point cut into flat chiselled facets instead of a cone. The paint has worn away where a thumb sits. Along the barrel, small and stamped: MEDIUM. Most people who've never worked with wood assume it's a novelty shape. It isn't. It's built for a job a round pencil can't do. ## Why is the pencil rectangular instead of round? So it stays where it's put down. A beam, a windowsill, the top edge of a stud wall — a carpenter sets a pencil down constantly, on a narrow or sloped surface, and picks it back up a minute later without looking for it. A round pencil rolls the moment gravity gets a vote; a rectangular one sits flat on one of its faces and stops. That's the whole reason for the shape. The pencil isn't returned to a case between uses either — it goes back into whichever pocket or ledge it came from, the same habit that keeps [a shed organised enough that nothing in it needs looking for](/stories/the-shed-is-a-filing-system). ## Why is the point cut flat rather than sharpened to a cone? Because a rotary sharpener only knows how to make a cone, and a cone is the wrong shape for a rectangular lead. Spin a flat pencil through a standard sharpener and it grinds away the two long faces trying to force a circle out of a rectangle — most of the wood is lost for a stub. Cut it by hand instead, with a knife, working the facets down to a wide flat edge, and the whole width of the lead stays available to mark with. That width is the point: a flat pencil's line is broad and decisive by design, not thin and accidentally thickened. ## What makes for a good one? The grade stamped on the barrel, chosen for the surface it's going to mark. MEDIUM is the workhorse — soft enough to show on rough sawn timber, hard enough not to smear under a square laid across it straight after. A softer lead marks more surfaces more visibly and wears down faster; a harder one holds its point longer and vanishes on anything textured. None of that is printed anywhere obvious. It's read off the stamp, the way [a stamped surname tells you whose tool this is](/stories/his-tools-are-labelled) before you have to ask. ## Do I need permission to print a trade's tool on a shirt? No — a flat pencil, a stamped grade, a knife-cut point: none of it belongs to anyone. There's no brand name here to license and no maker's mark being copied, just a design made the same way by thousands of people independently, because the shape solves the same problem wherever it's used. ### Where the licence question actually starts The only place this changes is a specific manufacturer's stamped logo reproduced exactly — that mark is theirs, and it's licensable the way any brand mark is. A generic MEDIUM in worn capitals, on an invented pencil, needs nobody's sign-off. Style has no owner. A work does. ## Does this work for a trade other than carpentry? The shape's specific to sawn wood, but the underlying idea — a tool reshaped because the generic version keeps failing at one particular job — is everywhere a trade has done the same task long enough to notice. Ask what tool in that trade got quietly modified from the shop-bought version, and a shirt this specific is usually one conversation away. ## Isn't a pencil too small a thing to build a whole design around? Not when it's drawn at the scale it is here — the point of putting it enormous and diagonal across a chest is that nobody's ever looked at a carpenter's pencil this closely before. Most people who've held one only registered "flat," not why. Blown up, the knife facets and the worn paint are what carry the shirt, specific in a way a small printed icon of a pencil never would be. ## Does it print well? Yes, in one or two inks — a shape this simple with hard rectangular edges is exactly what survives being put on fabric. The facets on the point are straight cuts, not curves, so they hold their shape at any size instead of softening into a blur the way a rounded point would. A grey graphite fill and a slightly darker outline is enough, with the stamped MEDIUM kept large enough that the letterforms don't fill in. Worn paint reads as a lighter patch rather than fine texture, so it stays legible instead of turning to noise the way a photographic scuff would. ## How do I get one made? Describe the pencil at [JustOG](/) — the wood it's cut from, the grade stamped on the barrel, how the point's been worked. Pick a direction, drag the crop frame, see it composited on the real garment, and it's made to order and shipped. Designs other people have published are in the [shop](/shop). One flat pencil, worn down at the paint, still sitting exactly where it was put down.