Topic: what is this fan for anyway?
The SD4 fan on the left of the extruder. what is its purpose? Seems like it cools the filament before it gets in the extruder and is melted.
Re: what is this fan for anyway?
If the filament gets too hot from the stepper, build plate, heat rising from the hot end, it can get softer and become more prone to bending below the extruder gear rather than getting pushed into the hot end.
- ggunners
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Re: what is this fan for anyway?
Keeps anything above the heater core cool enough to prevent filament jams.
SD2 Expert stock, ABS fume fan,
XYZ DaVinci 1.0 stock ABS, Simplify3D
QUBD Two-Up PLA, new 3D printed X gantry, Y idler, flex z coupler, extruder mount, E3D Lite
XYZ DaVinci 1.0 stock ABS, Simplify3D
QUBD Two-Up PLA, new 3D printed X gantry, Y idler, flex z coupler, extruder mount, E3D Lite
4 2014-10-27 16:06:01 (edited by Tomek 2014-10-27 16:06:11)
Re: what is this fan for anyway?
IanJohnson wrote:
If the filament gets too hot from the stepper, build plate, heat rising from the hot end, it can get softer and become more prone to bending below the extruder gear rather than getting pushed into the hot end.
This + also shears more easily at the extruder gear, and can swell in the cold zone. But mostly what Ian said.
Re: what is this fan for anyway?
Ok, thanks.