How much does 3D printing cost?
Less than most people expect in plastic, more than most people expect in time. Here is where the money goes, with real numbers.
The short answer
A typical small part — a 42 cm³ phone stand in PLA that prints in three and a half hours — costs about $8.08 to make once you count machine time, failed prints and ten minutes of cleanup. If you sell it through a marketplace and want to keep a 40% margin, the price works out to about $16.17. The plastic itself is only $1.04 of that.
These examples use the calculator’s default rates: PLA at $20/kg, a 120 W printer, electricity at $0.18/kWh, $1.20 per machine hour, a 5% failure rate, $15/h for finishing, a 10% platform fee and a 40% margin.
| Size and time | Material | Cost to make | Suggested price | |
|---|---|---|---|---|
| Keychain | 6 cm³ PLA, 45 min | $0.15 | $1.62 | $3.24 |
| Phone stand | 42 cm³ PLA, 3.5 h | $1.04 | $8.08 | $16.17 |
| Small planter | 180 cm³ PLA, 11 h | $4.46 | $21.30 | $42.59 |
| Cosplay helmet section | 900 cm³ PLA, 45 h, 90 min finishing | $22.32 | $107.52 | $215.04 |
Each name opens the calculator with those exact numbers, so you can swap in your own rates.
The four things that move the price
1. Material
Material cost is volume × density × price per kilogram. PLA weighs about 1.24 g per cm³, so the 42 cm³ stand uses about 52 g. Switching filament changes the number less than you might think: the same stand costs $8.08 to make in PLA and $8.59 in TPU, because material is a small share of the total on most prints. It only dominates on big, quick, solid parts.
Two things raise real material use above the model’s volume: supports and brims, and infill settings. If your slicer reports filament used in grams, divide by the density and type that volume in instead of the model’s.
2. The machine
Every hour on the printer wears nozzles, belts, bearings and build plates, and pays off the printer itself. A useful way to set a machine rate: take what the printer and its spare parts cost, divide by the hours it will realistically print in its working life, then add your share of space and downtime.
For a hobbyist that might be $0.20–0.50 per hour. For someone selling prints it is usually higher, because a printer is rarely busy all day: if it prints a quarter of the time, every printed hour has to carry four hours of the fixed costs. That is why the calculator starts at $1.20.
3. Time
Print time is the biggest lever. Machine cost and electricity both scale with hours, and so does the risk of a failure late in a print. On the phone stand, machine time is $4.20 of the $8.08 — more than four times the plastic. A thicker layer height, fewer walls or lower infill can cut hours sharply; electricity, at $0.08 for the whole print, barely matters.
Your own time counts too. Removing supports, sanding and packing are minutes of hands-on work. Ten minutes at $15 an hour is $2.50 — on small parts, finishing can cost more than the plastic and the electricity together.
4. Batch size
Printing ten stands on one plate instead of one at a time helps twice: the printer spends less time travelling and heating up per part, and you set up the cleanup once. If that brings each stand to 3 hours and 6 minutes of finishing, the cost to make drops from$8.08 to $6.44 per stand. The catch: one failure late in the job can take the whole plate with it, so keep the failure rate honest.
Printing for yourself vs. selling prints
If you are printing for yourself, set the platform fee and margin to zero, use a low machine rate, and leave your own time out. The same phone stand then costs about $2.28 — this is the honest answer to “how much does it cost to 3D print something at home”.
If you sell, the platform fee and your margin come out of the selling price, not on top of the cost. The calculator works the price backwards: price = cost ÷ (1 − fee − margin). That is why a $8.08 part sells for $16.17, not for $8.08 plus 50%. The guide to running a 3D printing business goes into how to set those numbers.
Resin prints cost differently
With resin (SLA, MSLA) the cost picture changes: print time depends on the height of the job rather than how many parts are on the plate, resin costs more per kilogram than filament, and washing and curing add materials and minutes. Seewhat a resin print really costs.