3D Printing - Volumetric Flow Rate Calculator
Here’s a simple calculator that will help you figure out your printer’s flow rate with your desired line width, layer height, and print speed.
Here’s a table with most of the popular hotend options and their estimated flow rate.
Flow rates are assumed with a standard 0.4mm brass nozzle.
You may be able to achieve a higher flow rate depending on the filament, nozzle, and printing temperature that is used.
| Hotend | Flow Rate (mm3/s) |
|---|---|
| E3D V6 | 11 |
| E3D Revo | 11 |
| Dragon SF | 15 |
| Dragon HF | 24 |
| Dragonfly BMO | 13 |
| Rapido HF | 24 |
| Rapido UHF | 30 |
| Mosquito | 20 |
| Mosquito Magnum | 30 |
Maximum Print Speed Calculator
If you have calibrated your hotend and know the max. flow rate, you can use this calculator to determine the max. print speed you can achieve with your desired line width and layer height.
Finding Your Max. Flow Rate
There are a few ways to determine your max flow rate. One of the best is CNC Kitchen’s Max Flow Test. It’s an accurate test that lets you calibrate using different temperatures. It is a bit tedious and requires a milligram scale but it produces great results.
Max. Flow Test GitHub | Youtube Tutorial | Max. Flow Test Tool
Another great way to find max. flow is to use the built-in max. flow test that you can find inside Orca Slicer. This test involves a single print that automatically increases the flow rate after a certain number of layers. When the walls start to show under-extrusion, you’ll roughly know the limits of your hotend. I recommend printing a few of these at different temps to have a better understanding of your maximum flow rate.
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