Calculator Inputs
Example Data Table
| Scenario | Volume (cm³) | Height (mm) | Layer (mm) | Infill | Supports | Flow (mm³/s) | Result (hh:mm:ss) |
|---|---|---|---|---|---|---|---|
| Prototype bracket | 18 | 35 | 0.28 | 15% | 0% | 10 | 01:14:30 |
| Functional housing | 52 | 85 | 0.20 | 25% | 10% | 8 | 05:42:10 |
| High-detail model | 30 | 60 | 0.12 | 20% | 12% | 6 | 09:08:55 |
These are planning examples. Your slicer and machine tuning may differ.
Formula Used
1) Convert volume
Vmodel(mm³) = Vmodel(cm³) × 1000
2) Estimate printed material volume
Vtotal = Vmodel × M where M is a multiplier that includes shells, infill, and supports.
3) Extrusion time
textrude = Vtotal / Q where Q is max volumetric flow (mm³/s).
4) Layer overhead
Layers = ceil(Height / LayerHeight)
tlayer = Layers × (LayerChange + RetractionOverhead)
5) Travel and total time
ttravel = textrude × (TravelRatio/100) × ComplexityScale
ttotal = Warmup + textrude + ttravel + tlayer + Pauses
How to Use This Calculator
- Get model volume and height from your slicer or CAD export.
- Enter layer height, infill, supports, and wall count.
- Set a realistic max flow for your nozzle and material.
- Adjust travel ratio and complexity for detailed geometries.
- Add warmup, layer change, retraction, and pause overheads.
- Press Estimate Time to view results above the form.
- Use the CSV or PDF buttons to export the latest estimate.
Throughput and layer count
Print duration is set by deposited material and layer count. The calculator converts model volume, then scales it with infill, supports, and walls. Height and layer thickness determine how many layers run, adding repeated overhead. Use the estimate to compare options before committing to a full slice. It helps set expectations for machine utilization, shift planning, and delivery windows during busy production weeks today.
Volumetric flow limit
Max flow (mm³/s) is a working ceiling for nozzle, heater, and polymer. When flow is low, extrusion dominates. Enter a stable value from calibration or proven profiles. Larger layer heights raise demanded flow, so speed may need to drop to keep lines consistent.
Infill, walls, and supports
Infill increases core volume, and extra walls increase perimeter length and corner slowdowns. Supports add geometry that prints with thin lines and frequent direction changes. For many islands or sharp features, raise complexity and travel ratio to reflect extra motion. Adjust supports and walls to see schedule impact quickly.
Travel and retraction overheads
Non‑printing moves are costly on detailed parts. Travel ratio approximates time spent repositioning versus extruding. Retraction overhead captures prime/retract cycles and pressure recovery. If you tune stringing by increasing retractions or z‑hops, raise both travel ratio and retraction time for realistic planning.
Layer change and warmup time
Tall prints accumulate seconds per layer from Z moves, settling, and any purge action. Warmup includes preheat, homing, probing, and first‑layer routines. Pauses cover filament swaps and inspections. Tune these values until one known job matches the reported total.
Quoting and capacity decisions
Use the CSV export for quoting: save typical profiles by material with flow and overhead assumptions, then change only volume and height. The PDF summary suits job travelers and approvals. Treat results as an engineering estimate, then validate final schedules with your calibrated slicer profile.
FAQs
1) Why does layer height change time so much?
Layer height controls how many layers are printed. More layers increase repeated overhead like Z moves, pressure settling, and retractions, so total time rises even if the part volume stays similar.
2) What value should I use for max flow?
Use the highest stable volumetric flow your machine can sustain for the material and nozzle, without under-extrusion. Many users derive it from a flow calibration test or slicer-based speed tower.
3) How do I estimate model volume?
Most slicers display volume after importing the mesh. You can also compute it from CAD exports. Enter the slicer-reported value to stay consistent with your printing workflow.
4) What does complexity factor represent?
It scales delays from short segments, corners, and frequent starts. Increase it for intricate models, lots of small features, or heavy cooling constraints that force slower motion.
5) Can this replace slicer time estimates?
No. It is an engineering planning tool for early comparisons and quoting. Final timing should be validated with a tuned slicer profile and a representative test print when accuracy matters.
6) Why do supports add more time than expected?
Supports often create many thin lines, bridges, and direction changes. That increases acceleration limits and retractions, so the time penalty can be larger than the added material alone suggests.