Questions tagged [z-axis]

Use this tag for questions related to specific movement of the Z direction of the printer - Questions about a machine or 3D model's Z-axis

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10
votes
3answers
14k views

What's the advantage of two z motors?

Some RepRap models use only a single motor for the Z axis, others use two. For example, there is the 3drag that has only one motor and a smooth rod on the other side. There are modifications that add ...
9
votes
6answers
19k views

Nozzle rubs on previous layers

I'm having a frustrating problem on my recent built custom 3d printer so every single print I made, from the third layer, the nozzle is "rubbing" on the already placed filament. This results in a ...
9
votes
3answers
2k views

Do I need to recalibrate z-probe offset every time I switch to a different layer height?

It occurs to me that I'm never really thinking about layer height when I calibrate my z-probe offset. This is obviously an oversight, because I'll want my nozzle to start higher for 0.3mm layers than ...
8
votes
2answers
9k views

How do I wire the z-axis motors in parallel on the Prusa i3?

There is a little circuit board, or breadboard or something in the diagram of the wiring for the i3. And it's mentioned that the z-axis motors need to be wired in parallel but beyond that they don't ...
8
votes
3answers
11k views

Z-axis steppers and bed alignment problems

I've actually solved this, but I think its still a useful question which I don't think is easy to answer with existing questions. As soon as I'd built my ANET-A8 (Prusa i3 DIY kit), I found I was ...
8
votes
2answers
3k views

z-axis hard to move in some areas - what could be faults, how to improve?

I have a z-axis which follows schematically the same principle as the makerbot one's (threaded rod and two leading rods with linear ball bearings carrying a level). It is from an old experimental lab ...
7
votes
1answer
2k views

Full steps mode for Z axis stepper controller

I have a Cartesian style 3D printer (FLSUN Cube), with two Z-axis stepper motors (1.8°, 200 steps/revolution) with T8x8 lead screw (8mm / 2mm pitch with 4 starts), and currently they are using 1/16 ...
7
votes
3answers
5k views

Does anyone know the thread size (pitch and lead) of the Anet A8's lead screw?

I bought a new printer, and unfortunately the left nut for the lead screw isn't tapped. Does anyone know the thread size, w.r.t. both pitch and lead, of the lead screws?
7
votes
1answer
3k views

Marlin “Tune->Bed Z” vs “Tune->Babystep Z” vs Z Offset?

What is the difference between: Tune -> Bed Z Tune -> Babystep Z Control -> Motion -> Z Offset And when are you supposed to use "Bed Z"?
7
votes
1answer
2k views

Screeching Noise when moving the Z-Axis Down

I have had my Prusa i3 clone for about two years and it has always made a screeching sound when the z-axis is moving down. I have tried many solutions for this problem like greasing the z-rods, ...
7
votes
1answer
2k views

Z motor not moving during auto home

My Monoprice maker select recently fried its melzi board. So I went out and purchased a ramps 1.4 kit. I've wired it all up and Flash the firmware with marlin(most recent build). When it boots up ...
7
votes
1answer
2k views

Z Axis getting stuck with Marlin 1.1.0-RC7

Background: I just successfully installed a RepRapDiscount Full Graphic Display on my Prusa i3; and in doing so, I've upgraded all of the firmware to the latest version of Marlin, 1.1.0-RC7. With my ...
6
votes
3answers
674 views

Lead screws - M8 instead of M5?

I am building a Prusa i3 MK2S (Dolly). I find it very difficult to find M5 rods for the Z axis, I have an M8 lead screw with 8 mm lead, So I thought since M8 is widely available online I could ...
6
votes
2answers
188 views

Is z-axis zero near the hotend?

I'm in the process of building the D-Bot core XY printer, and I was hoping to know if the Z-axis 'zero' is near the hot end or near the bottom of the printer furthest away from the hotend? In this ...
6
votes
4answers
3k views

How to keep Z-axis motor from slipping when powered down

Because of the weight of my Z-axis and the relative ease of its motion, when the Z-axis motor is powered down the bed has a tendency to slip and fall down. Obviously leaving the motor powered solves ...
6
votes
2answers
3k views

Prusa i3 Z axis only goes down (even on up command)

I have just finished building a Tronxy P802M Prusa i3. When I try to move the Z-axis, using the hardware buttons in the LCD menu (without a computer connected), it only goes down, when I both ...
6
votes
1answer
467 views

Problems with Z step

Recently I bought a Prusa i3 pro W (from Geeetech) and I've been struggling with something that is ruining all my printings. I attach a photo with what was supposed to be little "boxes": As you ...
6
votes
3answers
581 views

Is cutting the arm off the Z-axis switch a good idea?

We all know (or should!) that the repeatability of common spring-arm limit switches is crappy at best. I'm looking to build & install one of the precision height adjusters for the Z-axis limit ...
6
votes
2answers
5k views

Z-Axis does not appear to be working on Ender-3 Pro

So, the wife got me a Creality Ender-3 Pro 3d Printer for Christmas. Assembly was easy, axis movements are all solid... when I go to print the test-dog.gcode file provided with the machine, it comes ...
6
votes
1answer
1k views

First layer height problem after changing nozzle

I have a problem with my first layer height. But lets start at the beginning: I own a Tevo Tarantula Dual extruder printer with a endstop switch for Z axis. No Auto bed level. 0.4mm nozzle. ...
6
votes
1answer
345 views

No Z hop in Dual extruder, print getting disturbed at retraction point

I'm using a Lulzbot KITTAZ with V2 Dual extruder(0.5mm). When I'm printing anything, the front left side of the print is getting disturbed because whenever the tool head switches the action between ...
5
votes
4answers
2k views

Why aren't fixed build platform 3D printers popular?

I'm trying to build a DIY 3D printer for myself. I've been exploring many different styles of printers and found this type of printer that has a fixed bed that stays fixed in one place and the whole ...
5
votes
2answers
4k views

How to calculate the proper layer height multiples?

We all know, that the best layer hight is, when you have multiples of full steps. If it is not, sometimes steps get skipped and end up bad layer-to-layer adhesion when one height step missed a tiny ...
5
votes
3answers
1k views

Is there a reason for the z-axis M5 drive nut to be super loose on the lead screw?

So I bought a prusa i3 kit from a company called folger tech off of ebay. I've built it and even printed out a few parts, but I noticed that a lot of noise seemed to be happening only while the x-axis ...
5
votes
1answer
109 views

What is this part and does it have to do with my my z-position is messed up?

I recently bought my first 3d printer, a monoprice maker select v2. After a couple of print jobs, this piece fell out. I have no idea where it came from. But afterwards, I notice that my Z-...
5
votes
1answer
845 views

3d prints come up with ribbing on one side

The right side of my prints always have the standard ribbing effect given by a bent z rod, however I have replaced the rod and there was no change. Here are pictures of one of my more recent prints: ...
5
votes
3answers
2k views

What are the pros and cons of using a BLTouch in place of a limit switch?

This is about practicality. I'm hearing that people are using their BLTouch not to adjust the Z offset, but as the limit switch for the machine! Why is this so? What are the pros and cons of using a ...
5
votes
1answer
2k views

Z-axis endstop not functioning after Marlin Firmware installation

I've had my Monoprice Maker Ultimate for a few months and have started doing upgrades to it. My most recent change is in upgrading the firmware to a newer version of Marlin so that I can better ...
5
votes
2answers
4k views

Z-Axis zero/home position is higher than the actual print starting position

I'm having an issue with my very first printer, a Monoprice Select Mini V2. After doing about 20 successful prints on it, the Z axis is suddenly acting very odd. When I 'home' the Z axis and move the ...
5
votes
1answer
121 views

Why not use GT2 en lieu of a Z-axis threaded rod or leadscrew?

Having just re-read Tom's excellent answer to my question Advantages of GT2 over a rack, as my comment ponders1: Why is a threaded rod, or lead screw, used for the Z-axis movement in a Prusa (and its ...
5
votes
1answer
423 views

Printrbot simple metal not auto leveling

I have a printrbot simple metal with the heated bed upgrade. Its been working fine until Cura updated, now, after the x,y, and z axis zeros, the print starts without moving to the other corners and ...
5
votes
1answer
933 views

Anet A8 One Z output only moves down (even on up command)

I just finished assembly of Anet A8 (Prusa i3 clone). X any Y work fine, both Z motors move down just fine, when homed. On Z-stop trigger, right Z moves up, left Z continues to try to move down. ...
5
votes
2answers
1k views

print quality: z wobble issue

Yesterday i replaced the z axis of my diy printer. Now i have some strange waves on the side of my prints. Are the threaded rods bent or could that be a vibration issue? Or is the coupler too stiff?
5
votes
1answer
392 views

Small Z axis step: Repetier-Firmware

Z axis length for my printer equals 120 mm. When I manually pass this length, from display controller menu, it's about few millimeters. Then I set the resolution (ZAXIS_STEPS_PER_MM) at 1600 steps per ...
5
votes
1answer
6k views

Z axis: Stepper motor and lead screw torque calculation

I am trying to figure out some calculations regarding stepper motor and lead screw. These are the things need answer: Selection stepper motor to lift given weight? Amount of load threaded rod can ...
4
votes
1answer
3k views

Alignment of dual Z-axis steppers

My newly built ANET A8 has dual Z-axis steppers (and two threaded rods), but only an end-stop on one side. Am I missing some detail for ensuring proper alignment of Z as the extruder moves along the Z-...
4
votes
2answers
930 views

Anet A8 right Z drops 2 mm during print

I've noticed that after my Anet A8 completes a print, the right hand Z mount ends up 1-2 mm lower than the left, even though I make sure both the left and right hand Z mounts of the X-axis are at ...
4
votes
2answers
3k views

Assisted manual levelling with Marlin

Marlin offers a bunch of different choices for auto-levelling and assisted manual levelling for bent build plates (mesh levelling), but for the moment I want to level things completely manually. That ...
4
votes
1answer
1k views

Printerbot printing stringy

My Printrbot is always printing stringy, despite changing the setting on my z probe by entering command M212 Z-.1 through Z-1.5, with and without a heated bed. My prints look roughly like the one on ...
4
votes
3answers
4k views

Ender 3 Z-limit now unreliable - possible causes and solutions?

I had a couple of recent nozzle/bed crashes, so I now frequently do a manual bed levelling. I do these while the bed is heated to allow for expansion. Today i found, after levelling, a subsequent ...
4
votes
3answers
915 views

Weird stepper issue when setting up Marlin printer

When manually controlling the z-axis in reprap, it works fine. If I use the home button, it doesn't move. Instead, it stalls/freezes/hangs. It attempts to turn, but can't successfully make a full turn....
4
votes
2answers
1k views

Printer homes to z stop-switch, but presses on heatbed during printing

I have a Prusa i3 that homes properly when you use the menu. After adjusting the bed and homing several times it keeps the head at a reliable distance. However when I try to print from SD card, the ...
4
votes
1answer
3k views

Z axis Stepper motors not working correctly

I have been searching around the internet for the last 3 days trying to figure this out. My Z axis motors for a pursa-i3 3d printer are not working correctly. I have marlin firmware and using repetier ...
4
votes
3answers
2k views

Z-axis not moving up

I'm near the end of the build of a i3 MK2 clone and have run into a problem with the Z-axis motors. Specifically, the Z-axis will move down (and trigger the endstop) but it will only make a quick ...
3
votes
3answers
841 views

Ball screw: Maintaining Z axis position when motor is OFF

I'm building a 3d printer of size 500 x 500 x 500 build area. For the Z axis, I'm planning to use this Linear actuator. The maximum weight Z axis might encounter is 15 Kg due to it being a clay ...
3
votes
2answers
644 views

TEVO Tarantula Z-Axis Lowering Too Far After Endstop Triggered

A z-axis homing issue is giving me an ulcer. I'm hoping someone can help with this. As per usual, after the Z endstop is triggered on my TEVO Tarantula the gantry raises a bit then slowly lowers back ...
3
votes
2answers
5k views

Any code to move up Z axis after finishing the printing?

Is the firts time that I saw this movement after the printing has finishig and causes the nozzle crashes to the printed part and I noticed due the part is 14x8 and the nozzle is to near and below to ...
3
votes
3answers
1k views

Z-Axis doesn't work only during printing

Problem: Z-Axis doesn't work during a print. It attempts to work, maybe climbs on the Z-Axis, but screws back down. It whines, too. But, Z-Axis DOES work while not printing. It doesn't matter if ...
3
votes
1answer
347 views

How bed leveling is achieved without table screws?

I have seen printers with table screws and bed leveling sensor and printers that have only bed leveling sensor (such as Prusa). So my question is how does the bed levelling work when there is only a ...
3
votes
2answers
2k views

Z Axis inconsistency - Geeetech I3

I'm 3D printing almost 2 years, and I expected to have better result after changing to complete smooth rods with new bearings. I have a problem with my Z axis giving me inconsistent prints; I already ...