Does flow rate affect temp/cooling?

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Does flow rate affect temp/cooling?

Postby Noren » Thu Apr 19, 2018 7:19 am

I did a print yesterday. And the nozzle started hitting the supports. So I lowered the flowrate on the printer from 94 to 92%.

And that caused the finish of the printed PLA to change from glossy to matte.
(I get the same glossy/matte finish difference on PLA if I print with different temps).

Does lowering flow rate make the plastic "linger" longer in the nozzle/throat and therefore get more cooling? And extruding colder.
Or is something else in play here?


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