Most sellers price by filament weight and lose money on every job. The real cost is time, labor, and overhead, not plastic.

Most 3D print sellers price by the gram and bleed money on every job.

A recent wave of content from print-on-demand platforms and experienced shop owners points to the same mistake: pricing by filament weight while ignoring machine time, labor, and failure rates. The result is sustainable only if you treat your own time as free and never have a failed print.

The first step is separating material cost from machine cost. A 50-gram PLA part might use $1.25 of filament. If it takes five hours to print, the machine depreciation, electricity, and wear add another few dollars. Add fifteen minutes of setup, support removal, and packaging, and the real cost is already well above the material price.

The second step is accounting for failed prints. Even on dialed-in profiles, failure rates of five to ten percent are normal. That means every successful print needs to absorb the material and machine time of a failed one. Build that waste into your base price rather than absorbing it as a surprise loss.

The third step is minimum pricing. A ten-gram keychain that prints in forty-five minutes still requires the same setup, customer communication, and packaging as a larger job. A flat minimum charge per order covers the overhead on small parts without turning away customers on larger projects.

The fourth step is platform fees. If you sell through Etsy, Shapeways, or a print-on-demand service, the marketplace takes a cut before you see revenue. Calculate your price backward from the take-home amount you need, not forward from material cost.

A simple formula holds up in practice: multiply material, machine time, labor, and overhead by a markup factor, then add a startup fee. For most desktop FDM shops, a two to three times markup on total cost produces a sustainable price. Below that, you are subsidizing the customer.

The sellers who last are the ones who track actual costs against quoted prices and adjust. After a few dozen jobs, the data tells you where margin leaks. Until then, use the formula, charge what the job actually costs, and stop competing on price alone.

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