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14 votes
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What's the advantage of two z motors?

There are three main options here for Mendel style ZX gantries: One Z screw and motor, which is similar to a cantilevered design but somewhat more stable because of the opposite smooth rod Two Z ...
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  • 6,446
13 votes
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Real life stepper speed

The four main motor speed limits in a 3d printer are: Firmware step generation frequency limits Firmware motion planner effects Loss of torque and precision due to motor coil inductance and back-EMF ...
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  • 6,446
8 votes

Pulling filament through long tubes

I would say it's not the best approach. In the situation you've described I would rather install some kind of vertical ring a bit above your printer. This ring would organize your filament going ...
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6 votes
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What does a "3 h5" mean in reference to the axle of a motor?

I think it's a reference to a tolerance. Look at this ISO table. This States that the nominal diameter of 3mm is held to a tolerance of +-0.004mm. @DarthPixel provided some great links identifying ...
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  • 6,214
5 votes
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Customized Ultimaker 1: Extruder motor does not move

Did you heat the hotend before attempting to move the extruder? Most firmwares block cold extrusion. If you send the printer M302 it will allow the extruder motor ...
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  • 2,090
5 votes
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How to build the extruder motor holder for the Kossel Mini

Have a look at the image provided in this seller's part description. it probably says more than my words could (which would also only rely on images - your parts just looked like I saw them somewhere ...
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  • 2,854
5 votes

Pulling filament through long tubes

This is somewhat similar to a question I asked a while back. Pay attention to Ryan Carlyle's response in the question I posted. His post essentially explains various ways that guide tubes may hinder ...
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  • 6,214
5 votes

How to use E1 as E0?

I would change the pin assignments by swapping E0 and E1 in pins_RAMPS.h.
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  • 903
5 votes

Stuck filament in the extruder of Infitary M508

The hot end can clog in two places. Heat distortion can cause the filament above the nozzle, at the level of the cooling fins, to melt, expand and prevent further passage. The nozzle itself may be ...
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5 votes

Classifying method of control of 3D printers?

The question is if robots classification terminology the textbook sketches applies to 3D printing? Servos (closed loop) are used in robots to guarantee position (you don't want to accumulate an error ...
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5 votes
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Using stepper motors with integrated controllers

Many of the motors that look like stepper motors in laser printers are actually three-phase brush-less DC motors. These look like stepper motors, but are intended to be used differently, controlled ...
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  • 4,418
4 votes

How to use E1 as E0?

As a quick and dirty solution you may try to enable two extruders in configuration file, re-upload firmware, and then edit your GCODE file to replace all E0 references with E1.
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  • 868
4 votes

Pulling filament through long tubes

I would like to add to the already great discussion, that this general approach is prone to filament degradation by water intake. That is, if you are using filament for which this is an issue (PLA as ...
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  • 2,854
4 votes

Ramps 1.4 1.8 stepper motor extrusion calculation

According to the description, the drive gear you have has a 10.8mm diameter. This means that (in the ideal case) one full rotation of the drive gear will advance a ...
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4 votes
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QIDI x-one2 : Fan screws not holding filament feeder stepper motor in place

I just had this same problem and my solution was to push the motor as close as I could up to where the screw goes, because they weren’t lined up. I hope that helped.
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4 votes
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Stuck filament in the extruder of Infitary M508

Unfortunately you're going to have to tear the extruder head apart and clean the nozzle. There are kits like the following (found on Amazon - No affiliation): This will give you everything you need ...
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4 votes

Spindle DC motor and drill bit specifications for Circuit etching CNC machine

There are several sources of PCB "etching" bits. They tend to be single straight flutes and high angle, very pointy bits. For the motor, high speed is good. Look for 30k+ RPM. The main thing to be ...
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  • 4,418
4 votes

Spindle DC motor and drill bit specifications for Circuit etching CNC machine

At Hyrel, where I work, we use a 12 VDC, 3.5 A, 40 W spindle tool with 1/4" chuck and 3,000 rpm max (without load) to make prototype circuit boards by machining through the copper layer ...
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  • 2,282
4 votes

Stepper Motors getting extremely hot

I notice that in "configuration_adv.h" for the BIGTREETECH-SKR-mini-E3, which uses TMC2209 drivers, the similar section has: ...
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3 votes
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Is it ok for stepper motors to be hot?

The maximum operating temperature can be found in the specifications of your steppers. Usually the ambient temperature operating conditions are limited to 50 °C with a maximum operating ...
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3 votes

0.9° motors for Delta printers?

What you're seeing there is commonly referred to as "salmon skin" and isn't a result of the motor stepping, but due to power backfeeding from the motors. Install a set of flyback diodes on each axis (...
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  • 31
3 votes

0.9° motors for Delta printers?

Delta bots always need all motors to step to maintain a straight level. Microstepping, is not magic, the incremental torque decreases per step so that you will be more likely to miss a few micro-steps....
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  • 30.6k
3 votes

Extruder motor does not stop after G1 E5

If the printer is in absolute positioning mode (which is used almost exclusively), then the extruder will either wind back or wind forward to the last 5mm point. Effectively, the firmware treats the ...
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  • 2,972
3 votes

Weird Movement and not homing

As far as I can see on the attached videos your homing movement is reversed. as per Marlin, the homing for X shall move towards the left side and for Y to the back of the printer. That could occur ...
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  • 1,922
3 votes

Stepper Motor for Prusa i3

Awful answer, I know, but it depends... on where you are going to employ them: are they are all, or just some, of the axes, or; just for the extruder? If they are for use in translating movement of ...
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  • 5,717
3 votes
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Marlin, end stops, and position report - possible bug?

Some info on the subject: few stepper motors have any way of knowing their exact position during operation, which means Marlin will have to assume the steppers always are in the right place. In ...
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3 votes

Pulling filament through long tubes

Yes, this is feasible. You should constrain the tube at both ends, this prevents the spool from pulling up on the extruder. This approach is known as reverse bowden setup.
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3 votes

Stepper motor for CR10-S5 Y-axis

This is a NEMA 17 motor. It is virtually identical to the NEMA 17 motors Creality uses in most of their 12V products. In contrast to other companies, Creality uses a different connector with a flat ...
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3 votes

Printrbot Simple + OctoPrint on PC not working

Before any axis can move the printer must be homed correctly (G28 command, or an equivalent home button, there are 2: an X/Y and a Z button). A correct printer ...
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3 votes
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How to use a 3.8V stepper with Marlin / RAMPS?

The 3.8 V rating does not mean what you think it does. "Rated voltage" has a very specific technical meaning. For a 3D stepper motor to work properly, the rated voltage of the stepper motors ...
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