29
votes
Accepted
How to set Z-probe boundary limits in firmware when using automatic bed leveling?
There are a few questions on this topic, so a more generic solution would be informative and will prevent multiple questions of others when their sensor has a slightly different location. This answer ...
- 34.4k
12
votes
Accepted
Z Offset on autoleveling sensor setup
G28 instructs the printer to home itself to the X an Y endstops and the Z sensor determines the homing of the Z axis; i.e. when the sensor triggers, this is not ...
- 34.4k
12
votes
How to increase the amount of probing points for a BLTouch sensor in Marlin firmware?
You need to change the constant value(s) in your Configuration.h file of your Marlin version from:
// Set the number of grid points per dimension.
#define GRID_MAX_POINTS_X 3
#define ...
- 34.4k
10
votes
Accepted
Using auto-bed leveling, do I need to initiate G29 before every print?
No, it is not necessary to call G29 before every print to "auto level the bed" 1) provided that:
the bed surface has not changed (e.g. large load or ...
- 34.4k
9
votes
Accepted
What is the difference between M420 S and M420 S1?
TL;DR
Short answer: "There is no difference!".
Long answer
G-code is parsed line by line. The parser in the firmware reads the command and the options (also called parameters) following it, ...
- 34.4k
8
votes
Accepted
Does auto leveling result in sheared prints?
Using automatic bed leveling assists you in getting the print to stick better to the build platform as a result of the print head following the non-uniform geometry or tilt of the build plate.
In, e.g....
- 34.4k
8
votes
Will a glass bed warp as it is heated?
TL;DR
Yes, glass warps when hot. Use a physical touch sensor and calibrate it out, or swap glass if it's "bad".
The further you go into mechanical studies like 3d printing, mills, and ...
- 303
8
votes
Z-offset: 0.2 mm, 0.1 mm or the thickness of paper?
They are all generic guidelines. Don't count on them too much.
What you need is a reproducible offset to get the same value everywhere in the bed, then you can correct the overall offset via gcode at ...
- 4,123
7
votes
Nozzle jumps off the bed when using Marlin Mesh Bed Leveling
None of the answers address your question to solve it! The only sensible contribution comes from a comment of @TomvanderZanden.
For the sensor to stay within the limits of the bed (considering the ...
- 34.4k
7
votes
Accepted
How to set the Z home offset
It is preferred to get the distance correct by hardware changes (leveling screws). But it is possible to do it with software. You can not only change the Z offset in the slicer or in the configuration ...
- 34.4k
7
votes
Why is the center of my glass print bed lower than the corners?
This seems to be a common problem with ender-3 and cr-10 printers from Creality. Mine is the same way but not enough to keep prints from adhering.
Typically the aluminum bed is not perfectly flat. ...
- 251
6
votes
Accepted
Adding extra Z-offset to bed for PETG in Slic3r
An extra gap of 0.2 mm on top of your existing gap seems rather illogical as the filament is not squished at the build plate anymore. Furthermore 0.2 mm plus something you already have will soon ...
- 34.4k
6
votes
Accepted
Tevo Michelangelo nozzle below build plate?
Just move the Z-endstop up a little higher, also make sure the bed leveling screws are not completely screwed in.
So:
Move the head of the printer up.
Move up the Z-endstop so that the nozzle is a ...
- 34.4k
6
votes
Auto physical bed leveling?
Automatic bed levelling is not magic; it still requires you to level the bed properly (as level as possible). The upside of automatic bed levelling is that it compensates for small deviations like a ...
- 34.4k
6
votes
What is the Fade Height option in Marlin?
Fade Height is used to specify the height above the bed at which the printer should stop fading the bed leveling correction. Bed leveling is gradually decreasing with each successive layer until fade ...
- 1,151
5
votes
Accepted
Marlin's bed leveling Mesh Validation Pattern ignoring home offset
A Marlin developer confirmed that bed-leveling and probing are now performed entirely in the machine coordinate space.
To clarify further, if one has a non-zero home offset enabled, the following ...
- 271
5
votes
Accepted
What exactly does automatic bed leveling do?
Last first: use of a raft has nothing to do with bed levelling. It depends only on the features/shape/etc of the object being printed.
Now, as to what the auto-levelling does: the answer is, sadly "...
- 3,013
5
votes
How bed leveling is achieved without table screws?
Prusa uses 9 marker points in the bed that are sensed with an induction sensor to determine the X, Y and Z position. Any deviation for skewness or bed level is compensated through the software. Please ...
- 34.4k
5
votes
Issues with Auto Bed Leveling
Your problem is that the hotend carriage does not stop when the sensor triggers. I assume you mean "on homing", not "while printing" (UPDATE: after watching the video it is confirmed that it is "on ...
- 34.4k
5
votes
What exactly does automatic bed leveling do?
Basically there are two problems to address: first - bed inclination and second - uneven bed surface.
There are different algorithms dealing with one or both problems.
Most specialists insist that ...
- 514
5
votes
Accepted
How to set the boundaries for BLTouch probing
As explained in this answer it is you that needs to calculate where the head (read sensor) is supposed to go depending on the amount of space you have left on the carriage shafts.
As can be seen from ...
- 34.4k
5
votes
Accepted
I can't level my bed any more
The bar where the level is attached is the support cross-bar for the X-axis travel.
It's important this bar be level, but it's even more important the bar be true to the rest of the machine. We call ...
- 2,256
5
votes
I can't level my bed any more
For leveling your bed you do not require the use of a bubble level! This is not necessary, if you do, you need to place the printer on a bubble level underground. It is far easier to level the bed ...
- 34.4k
5
votes
Accepted
ANet A8 running Marlin v1.1.9 Auto Bedlevel with ROKO SN04-N
Too bad you broke the acrylic plate (nice temporary fix though), but you can easily print a replacement part once your machine is up and running.
Probe positioning is defined in the Marlin ...
- 34.4k
5
votes
Accepted
How to level bed after applying glue stick for bed adhesion
How much glue do you put on it? I use PVA based spray, barely visible, very evenly spread and no problem whatsoever of sticking paper to the glue layer.
Just level the bed as you normally would and ...
- 34.4k
5
votes
Accepted
Thread pitch of Ender 3 bed leveling screws
I measured mine with a thread gauge and it says the pitch is 0.7 mm.
So, as the stock adjustment wheels have 14 bumps around their circumference, turning by one of those is an adjustment of exactly 0....
- 314
5
votes
Accepted
Installed bed leveling probe, now Z homing moves to center
This is a consequence of enabling Z_SAFE_HOMING:
Z Safe Homing prevents Z from homing when the probe (or nozzle) is outside bed area by moving to a defined XY ...
- 335
5
votes
Accepted
Bed wobbling on Ender 3
If the V roller wheels aren't tight on the Y axis beam, it means the eccentric nuts are not adjusted correctly. Two of the rollers are mounted centered on the holes in the carriage frame, but the ...
5
votes
Accepted
What is ABL or UBL? Is this the same?
What are ABL and UBL?
ABL stands for Automatic Bed Leveling
UBL stands for Unified Bed Leveling
Level the bed?
A level bed (twisting knobs under the bed), or a surface that is exactly followed by ...
- 34.4k
5
votes
Nozzle not level and first print failed
Your Z-endstop assembly is clearly too high. Referring to your own first foto you see that the switch on the Z-endstop mount is nearly touching the bottom of the X-Z mounting.
You need to adjust the ...
- 34.4k
Only top scored, non community-wiki answers of a minimum length are eligible