What a 3D printing quote actually depends on (and how to brief a job)

Send a photo of a broken bracket with the message “how much?” and the honest answer is: not enough to price it yet. A 3D printing quote isn’t a guess or a gut feel, it’s the sum of a few specific things. Once you know what they are, you can brief a job so the number comes back right the first time, usually within the hour.

It comes down to material and machine time

Strip away the jargon and a print quote is built from two costs: the plastic a part consumes and the hours a machine spends making it. Everything else — quantity, finish, deadline — is a modifier on those two numbers. Size matters less than people expect; a part’s volume and how solid it is matter more. A large, hollow part with thin walls can cost less than a small, dense one. On our FDM 3D printing service the slicer estimates both figures directly from your model, which is why a good file is worth more to your quote than any amount of description.

Quantity: why the tenth part is cheaper than the first

There’s a fixed amount of setup behind any job, preparing the file, arranging parts on the build plate, starting and checking the machine. Order one part and that setup sits on a single unit. Order fifty and it spreads across all of them, and we can pack the plate so more parts print in the same run. That’s why unit price falls as quantity rises, and why low-volume batch production is often far cheaper per part than a one-off. If you have a rough idea of annual volume, tell us: it changes how we quote.

Material is the second-biggest lever

Materials vary in both what they cost per kilo and how easily they print. A functional part in PETG is priced very differently from the same part in an engineering material like polycarbonate, which runs hotter, slower and needs more care to print well. The right question isn’t “which is cheapest” but “what does the part have to survive” — load, heat, UV, chemicals. Tell us the application and we’ll match the material to it rather than quoting the most expensive option by default.

Tolerances, finish and orientation

How a part is oriented on the plate affects strength, surface finish and how much support material it needs — all of which feed the price. A part with a tight fit or a critical dimension takes more setup and sometimes a different process to hit reliably, as with this precision bracket we printed to a tolerance you can’t hit by hand. If a specific face has to be smooth, or two parts have to mate, say so up front. It rarely adds much cost when we know in advance, and it avoids a reprint if we don’t.

Speed is a line item

Most jobs run on a standard turnaround and many small parts dispatch within a day or two. If you need a part sooner, we can jump the queue for an express surcharge — you’re paying to displace other work, not for a different part. If your deadline is real, tell us what it is; if it’s flexible, say that too, because a relaxed timeline sometimes lets us batch your job efficiently and quote a little keener.

How to brief a job so the quote is right first time

The best briefs give us five things up front. Get these in and most quotes come back the same day. If you don’t have a model at all, that’s fine — our custom CAD service can build one from a sketch, a sample or a description, and we’ll fold that into the quote so you see the whole cost in one place.

What we can and can’t quote from

We can’t reliably price a part from a photo or a hand sketch alone — there’s no way to read true dimensions or wall thickness from an image, and a guess helps no one. What we can do is get you to a model. Send a physical sample and our reverse engineering service can measure or scan it into an accurate file; give us a brief and CAD can draw one. And we’ll tell you when printing isn’t the right call: if a part needs certification we can’t provide, a material we don’t run, or volumes that belong on injection moulding, we’ll say so rather than quote you into the wrong process.