Hi, Just a quick question. What is the maximum extrusion volume in mm3/sec for E3DV6 and for Volcano? I remember reading somewhere that there is a limit of 8-10 mm3/sec (in general, not just for E3DV6). I know about the calculation (nozzle size * layer height * print speed). I've created a spreadsheet that shows me what are the safe speed for given layer height and nozzle size. So far I have not been able to achieve this level of extrusion (10 mm3/sec). Apart from high speed printing (which my delta is capable of) I run a simple test - given the filament size of 1.75mm, I should be able to push the filament into the air so to speak at the rate of 4.15mm/sec. This I have not been able to achieve. The highest I could go without extruder grinding through the filament was 2.5mm/sec which gives me the extruded volume of 6.01mm3/sec. The calculation for that is - Pi * (filamentSize / 2)^2 * feedRate where Pi = 3.14159 and feedRate is expressed in mm/sec Any thoughts on this?

Not quite sure if you compute the volume per minute or per second now. With the given data, I get 6 microliters per second, 360 µl / min = 360 mm³ / min. Cheers, U.

BTW which head do you get that with? Standard E3DV6 or Volcano? And which nozzle size. What is the maximum extruder feed rate in mm/sec you are able to get?

ROFL This however does not answer my original question I am trying to setup my delta and would like to know how much filament other people are able to push through the hot end. I have no reference point as this is my first E3D head.

Best you can hope to do is about 15mm^3/sec on v6, and about 40mm^3/sec on Volcano. 15mm^3/s is about right as an upper limit under perfect conditions. 10mm^3/sec is a more reasonable expectation.