Makeratory Resources / Production economics
Machine cost guide
How to calculate 3D printer cost per hour
Your 3D printer cost per hour gives machine time a real value instead of treating a 20-hour print as if it consumed nothing beyond filament. That cost becomes the hourly rate used in job estimates.
What an hourly rate is trying to recover
Your machine rate can represent the costs that exist because the printer is running: purchase price, replacement reserve, maintenance, wear parts, electricity, and sometimes a share of shop overhead. It is not the same as labor. Your hands-on time should normally remain a separate input.
A simple starting formula
(Printer cost + expected maintenance + replacement reserve) ÷ expected productive lifetime hours + electricity per hour = machine rate.
Suppose a printer and essential accessories cost $900, you expect $300 of maintenance and replacement parts over 6,000 productive hours, and electricity averages $0.04 per print hour. The capital and maintenance portion is $1,200 ÷ 6,000 = $0.20 per hour. Add electricity and the starting machine rate becomes about $0.24 per hour.
Productive hours matter more than calendar hours
A printer that sits idle half the week is not generating 168 useful hours. Base the denominator on the hours you realistically expect to use for production. A lower number of productive lifetime hours raises the rate because the same machine cost must be recovered across fewer jobs.
Should profit be inside the machine rate?
You can build profit into the hourly rate, but separating cost from margin is usually easier to understand. First estimate what the machine hour costs your operation. Then use a pricing model that adds labor, fees, failure allowance, and target profit to the complete job.
Do not forget downtime and failed prints
Machine time has an opportunity cost when the printer could have been producing another job. A failed 12-hour print may consume material, electricity, printer capacity, and schedule time even if the customer never sees the part.
Use a rate that matches your purpose
A hobbyist estimating personal project cost may only care about electricity and wear. A small business may need replacement reserve and maintenance. A production shop with rent and staff may allocate additional overhead. There is no universal correct printer-hour rate; the useful rate is the one that reflects the costs you are actually trying to recover.
Use the rate in every product estimate
Makeratory lets you reuse your printer-hour cost alongside material, labor, failures, fees, and margin so each product estimate reflects the full job.
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