But this value is specific to your filament and it can differ even between spools. For Devil Design and Sunlu filament, i get a value of 1.74mm or 1.75mm. My filament diameter values differ depending on the brand of filament i use. Use only the first two digits of your measured filament diameter. This will ensure you get a good measurement.Īs you can see, my filament has small variations from the expected 1.75 mm diameter.Įnter the values in the calculator below. Use the thicker part of the caliper and keep the filament straight.
When using the caliper, make sure you don’t apply to much pressure. Grab your filament, and measure 5 sections of the filament at a distance of around 10 cm between measurements. Quality filament has a variation of less than 0.02 mm, while cheaper filament usually has a 0.05 mm variance in the thickness. The most common filament used in 3D printing has a thickness of 1.75 mm with small variations caused by the manufacturing process. Measure the Filament Diameterīefore we start the flow rate calibration, we need to make sure the filament size value is correctly set in your slicer of choice. It has a big impact on the flow rate calculation, and you should do it before calibrating the flow rate. If you haven’t performed this during the e-step calibration, I strongly recommend performing the Extruder Tension Calibration if your extruder supports this.
This allows for more accurate measurements, and it will improve the results when doing the flow rate calibration. When buying a digital caliper, I recommend getting one capable of double-digit measurement. You can get one from Amazon, Aliexpress or Banggood. When performing the Flow Rate Calibration, you need to have a caliper for measuring the wall thickness of the printed part. Sometimes, printers come with a good-enough E-step value, but in order to get accurate prints it’s recommended to double-check this. I covered the extruder calibration process in this article. In order to do an accurate flow rate calibration, the Extruder E steps need to be calibrated first. If the extruder steps are properly calibrated, the flow rate value should be really close to a single digit value (1.00). Besides this, flow rate calibration can also improve retraction values a bit and help with bulging corners and layer seam. Also known as Extrusion Multiplier, by calibrating the flow rate you can fix issues caused by under-extrusion or over-extrusion. The flow rate calibration is done in order to fine tune the amount of plastic extruded by the printer. 4 Wrapping Up Why do the Flow Rate Calibration?
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