Everything you need to know to optimize your 3D printing costs
Charging only for filament weight is the most common mistake. For a professional and profitable quote, you must calculate: Material cost + Electricity consumption + Machine depreciation and wear + Profit margin or design time. Use our calculator to automate this formula and ensure every print is profitable.
A home 3D printer (like an Ender 3 or Bambu Lab) consumes an average of 100W to 300W during operation, depending on the bed and extruder temperatures. This is roughly equivalent to a desktop computer's consumption. To calculate the exact cost on your bill, you need to multiply this consumption by your local kWh rate.
PLA is the cheapest and easiest material to print, ideal for visual prototypes. PETG offers greater mechanical and thermal resistance for a slightly higher cost, being the standard for functional parts. ABS is cheap but requires closed printers and higher temperatures, which increases electricity costs and failure rates. Choose the material based on the final application to optimize your costs.
The recommended profit margin depends on the type of part and market. For standard parts sold on generic platforms, a margin of 30-50% over manufacturing cost is usually reasonable. If you offer functional, on-demand, or custom-designed parts, margins of 60-90% are completely common in the industry. For specialized technical orders—such as industrial spare parts, prosthetics, or molds—margins can exceed 100-200%. Remember that the margin must also cover design time, post-processing, shipping, and machine wear across many prints.
Infill percentage directly affects part weight and therefore material cost. A 20% infill can reduce filament consumption by 30-40% compared to a solid part. However, it also increases print time, raising electricity costs. Supports add extra material that is not part of the final piece (between 5% and 20% extra depending on geometry) and require removal time during post-processing. The key is finding balance: use low infill for visual parts and high infill for functional parts, and minimize supports by properly orienting the model in the slicer.
Absolutely yes. 3D design time is one of the most undervalued parts of the cost chain. If you or your team model the part from scratch in programs like Fusion 360, Blender, or SolidWorks, those hours have a real cost that must be included in the final price. The same applies to post-processing: sanding, painting, chemical smoothing treatments (acetone for ABS), assemblies, or quality checks take time and, in some cases, additional materials. A simple method is to calculate your hourly rate for design/manual work and add it directly to the base manufacturing cost before applying the profit margin.