@michaelr123 said in CoreXY performance (max print speed) comparison:
............................. I know rapido uhf's claim they can hit 75mm3/s, not sure how possible that really is, ..............................
A lot depends on the filament. Something like PLA with a low viscosity will give a much higher volumetric flow rate than PET-G for example. When I was experimenting with 6 input, single nozzle multi-material hot ends, I tried some high flow rate prints using all 6 extruders in mixing mode, just out of curiosity. With a 1.5mm nozzle, 1.65mm layer width, 1mm layer height, I got and average flow rate for the entire print of 73mm^3/sec https://www.youtube.com/watch?v=gc8AciHjf4I but the best I could get with PET-G was around 44mm^3/sec using the same hot end, nozzle, layer width and layer height combination.