6 votes

Why do nearly all cheap 3D printers have a Bowden extruder?

As I understand it, there's really no good reason for this except "momentum". At some point in the not too distant past, a Bowden extruder was seen as an "upgrade" over direct ...
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5 votes
Accepted

Weight Reducing Design Change for Extruder Driver

Very cool idea, One motor would definitely be more than capable of producing the required torques even through a flexshaft connector. For any normal sized 3D-printer the torques required, and the ...
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  • 1,845
4 votes

Why do nearly all cheap 3D printers have a Bowden extruder?

Using a bowden extruder allows the manufacturer to place heavy components lower down on the printer frame. This lowers the center of gravity and reduces the amount of movement that the hot end creates ...
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3 votes

Weight Reducing Design Change for Extruder Driver

If you're talking about a common 3D printer stepper motor and driver, then one driver is perfectly capable of driving the motor both forward and backward. The flex tube setup you describe sounds like ...
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  • 126
3 votes

How to test Arduino Mega, RAMPS 1.4 and Full Graphic Smart Controller LCD?

So basically you just replaced everything except for the LCD (the LCD testing is described a little further). If the LCD is not working then, this could imply that either your LCD is broken, or one of ...
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  • 30.3k
2 votes

How to have double extruder and double Z motor on a 5-driver board?

I second the previous answer if running second Z motor in parallel, just split wires or buy adapter consisting of two females to one male, Z motor on most printers don't draw huge current (or at least ...
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2 votes

Extruder doing the shimmy, How can I fix?

It was the stepper driver, Replacing the motherboard fixed the issue.
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2 votes
Accepted

Ender 3 Pro extruder drive rocking back and forth

Sounds like one end or the other in your stepper cable is not seated correctly or has shaken loose there are 4 wires if even one doesn't make proper contact you will get a shaking back and forth ...
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  • 36
2 votes

Is there any (relatively simple) way to determine whether a stepper is being directed to move by the voltage signal across its winding?

So it would seem that there is always a pulsing waveform across the windings whenever the stepper is energized, correct? Correct. When the motor is holding its position, is there anything ...
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  • 2,286
2 votes

Steps per mm of extruder are incorrect after rebuilding

Ok, thanks everyone for at least taking time to read or thinking about this. The Problem is an absolute mess and there are two possible reasons: -> the octoprint eeprom editor is broken -> the ...
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2 votes
Accepted

Plug simple stepper motor NEMA 17 on E2 slot of the main board on Creality CR10

To prevent extrusion at cold temperatures, you should enable the feature called "allow cold extrusion" using G-code M302 S0. Using a spare stepper slot ...
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  • 30.3k
1 vote
Accepted

Extruder stops printing before finishing first layer (Ender 3 v2 w/BIQU H2)

Okay, so after yet another frustrating night of troubleshooting. I believe I have identified the specific problem. I reduced the G-code file to about 100 lines of code, that 100% reproduced the ...
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1 vote
Accepted

What are the effects of backlash from a geared stepper motor used to drive a filament extruder?

During normal extrusion backlash has no effect. During retraction you can perfectly compensate by increasing retraction length slightly. Backlash cannot be taken into account for pressure advance, but ...
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  • 3,776
1 vote

Steps per mm of extruder are incorrect after rebuilding

After a rebuild, and certainly after changing to another extruder (e.g. replacing it by a geared extruder like you supposedly did as taken from the comments above before the edit, which now clearly is ...
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  • 30.3k
1 vote

Extruder motor not running during print job but working after I preheat the extruder and test it

According to all the information: No reassignment of the extruder in the Gcode You can extrude if you push the filament by hand Extruder motor works when switched to Z driver Z Motor works I come to ...
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  • 844

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