Contact GraphiteGuild

GraphiteGuild is a small, independent, ad-supported site — there is no support desk standing by, but a real person reads everything that comes in to support@pencilbrush.com.

A few things this address is genuinely useful for: a calculator that gave you a result you think is wrong (say which tool — the graphite grade guide, paper weight calculator, perspective grid generator, grid-transfer calculator, value scale generator, or paper size guide— and the values you entered); a tool you wish existed on the site; an error or unclear step in the blog, learn section, or the museum; or a bug in how a page looks or behaves on your device.

There’s no fixed response time to promise, and no ticket number or live chat — email is read and handled as it comes in. If your question is really a “can you critique my drawing?” or personal tutoring request, an in-person class or instructor will serve you far better than this site can: GraphiteGuild provides general-purpose calculators and reference material, not personalised feedback, and it isn’t affiliated with any art school or supplier.

Before writing in about a tool result, it’s worth double-checking the values you entered — a mixed-up unit, an unusual paper basis, or a mistyped dimension is the most common source of a surprising answer. If it still looks off after that, that’s exactly the kind of message worth sending.