Pretty crazy PET-G melt (volumetric flow) rate I've been exploring melt rates for PET-G (high viscosity filament) with my latest multi-material hot end. By using all 6 inputs with equal mixing ratio, I got some pretty crazy results. Here is a link to a YouTube video showing a print with a 1.5mm diameter nozzle, 1.65mm layer width, 1.0mm layer height and print speed around 46mm/sec. [youtu.be]. The volumetric flow rate is shown at the end. https://reprap.org/forum/read.php?2,887063,887063#msg-887063 Sat, 11 Apr 2026 07:13:30 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?2,887063,887075#msg-887075 Re: Pretty crazy PET-G melt (volumetric flow) rate https://reprap.org/forum/read.php?2,887063,887075#msg-887075
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Dust
That is a decent flow rate

Not bad, considering it's PET-G which is relatively high viscosity. I could probably have got it a bit higher if I'd used elevated temperatures but then people would say it's not a fair comparison.

Having said all that, wait until you see what I achieved with PLA!]]> deckingman Developers Sat, 20 Nov 2021 04:40:06 -0500 https://reprap.org/forum/read.php?2,887063,887074#msg-887074 Re: Pretty crazy PET-G melt (volumetric flow) rate https://reprap.org/forum/read.php?2,887063,887074#msg-887074 Dust Developers Fri, 19 Nov 2021 23:02:07 -0500 https://reprap.org/forum/read.php?2,887063,887063#msg-887063 Pretty crazy PET-G melt (volumetric flow) rate https://reprap.org/forum/read.php?2,887063,887063#msg-887063 youtu.be]. The volumetric flow rate is shown at the end.]]> deckingman Developers Fri, 19 Nov 2021 08:37:28 -0500