Calibrating your flow rate (extrusion multiplier) will ensure you are getting the optimal volumetric flow from your hot end. This will allow you to produce strong, dimensionally accurate prints.

Prerequisites:

Flow rate calibration is extremely simple and can be completed in less than 30 minutes using the process below.

Step 1: Download our test file and import it in your slicer

 Step 2: Modify your existing slicers settings to match the list below

Step 3: Save the gcode and begin print  

Step 4: After the print has finished and cooled, carefully remove it from the build surface and take measurements of each of the four sides. Ensure you are taking measurements towards the center of the walls. Enter these four values into the calculator below.​ 

Step 5: Enter parameters below and calculate the new flow rate. If you are using vase mode number of walls will be one. Some users prefer to run this test with 2 or more walls instead of vase mode so feel free to experiment with both, however, we prefer using a single wall.

Step 6: Update flow rate (extrusion multiplier) in your slicer settings with the calculated value. 

**Please note this value will likely be different for every roll of filament.  

Step 7 (optional): Rerun the test with the updated flow rate and verify your measured value and slicer values match. Ideally, if your slicer is set to one wall and a line width of 0.48mm, your measurement should also be 0.48mm.

That's it, now your extruder is fully calibrated!