A useful 3D print cost model can include material, electricity, machine time or depreciation, labor, failed-print allowance, post-processing, packaging, shipping and marketplace or payment fees when those costs apply. The right model depends on whether you are costing a hobby job, internal part or saleable product.
Electricity, labor and depreciation measure different things. Electricity covers energy consumption, labor covers human time and depreciation or machine cost represents the economic use of the printer. Keeping them separate makes the hourly rate easier to adjust.
Tell us what you are trying to build, what problem you are solving and where the digital part becomes difficult. Martzine is built around that gap. Start with the outcome and the constraint, then work back to the right digital layer.
