horst.w wrote: ↑
Thu Nov 01, 2018 12:30 pm
But the new 0.35 nozzles are steel and the old one was brass. Can make the difference because they have different coefficient of thermal conduction.
303 Stainless Steel has 14% the thermal conductivity of 360 brass - so if enough plastic is being pushed through the nozzle a stainless nozzle might not be able to maintain temperature at the nozzle/plastic interface and could require lower print speeds. I haven't printed much with stainless nozzles and haven't seen this in action, but it's certainly a possibility.
16.2 W/m-K 112 BTU-in/hr-ft²-°F
115 W/m-K 798 BTU-in/hr-ft²-°F