3D Print Strength Calculator: Walls, Infill & Layer Direction
Compare printed shells and infill for load, stiffness and material use. Screening loads include a deflection limit; published benchmarks show where the model overpredicts.
Calcs for people who print functional parts: strength of walls and infill, fits and hole sizes from a test print, screws and heat-set inserts, multicolour purge waste and filament drying. Each calc shows its method, its data and their sources; settings are starting points to check on your own printer.
Compare printed shells and infill for load, stiffness and material use. Screening loads include a deflection limit; published benchmarks show where the model overpredicts.
Estimate filament drying time with spool heat-up, temperature and humidity, then predict re-wetting in room air or a dry box. Calibrate drying with your own scale log.
Size calibrated CAD holes, bosses and wall counts for inserts, self-tapping screws and printed metric threads. Numerical strength is enabled only with matching coupon data.
Compare filament, waste, printing hours and cost for AMS/MMU, dual nozzles, nozzle swaps and toolchangers. Edit dated scenarios and calculate cash or time-valued payback.
Turn measured test prints into slicer compensation and CAD hole or pin sizes. Separate shrinkage, wall error and diameter-dependent hole error for five fit targets.
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