Manual Grid Mesh Levelling

Veti

@Adamfilip said in Manual Grid Mesh Levelling:

I am having an issue with my Z pobe for auto leveling. s

what issue do you have?

Adamfilip

using 3x Piezo sensors under my bed. and its less sensitive towards the back of the bed, and often doesnt pickup probe points on all areas..

but really I'm hoping to get manual mesh setup figured out

fcwilt

@Adamfilip said in Manual Grid Mesh Levelling:

using 3x Piezo sensors under my bed. and its less sensitive towards the back of the bed, and often doesnt pickup probe points on all areas..

but really I'm hoping to get manual mesh setup figured out

Getting those to work an be a pain - I guess you have a delta?

In any case read my other post which tells you about what you want to do.

Frederick

Adamfilip

No delta, I have a Fixed Bed CoreXY machine

fcwilt

@Adamfilip said in Manual Grid Mesh Levelling:

No delta, I have a Fixed Bed CoreXY machine

And you are trying to use sensors under the bed? Curious.

Have you considered using a add-on z probe that connects to the extruder assembly?

Those are going to be much easier to get working well - particularly when probing a grid.

Frederick

Adamfilip

Yes I have previously had BLtouch that got ripped off from a loose print.. then replaced it and it it died from a head crash, I had a Duet IR Sensor, same fate. so I tried Piezo and it worked for a while but isn't reliable.

https://www.youtube.com/watch?v=JniUZn85Sb8

So now I'm going back to just a optical homing switch, and manual mesh levelling

Veti

@Adamfilip said in Manual Grid Mesh Levelling:

using 3x Piezo sensors under my bed. and its less sensitive towards the back of the bed, and often doesnt pickup probe points on all areas..

that sounds like its not working well

Adamfilip

@Veti exactly why im going back to a simple setup with manual mesh levelling

Phaedrux

Probe type P0 will work in a pinch.

Even stall detection on Z may work for you if you meet a few requirements.

fcwilt

@Adamfilip said in Manual Grid Mesh Levelling:

Yes I have previously had BLtouch that got ripped off from a loose print.. then replaced it and it it died from a head crash, I had a Duet IR Sensor, same fate. so I tried Piezo and it worked for a while but isn't reliable.

Wow. That is a one streak of bad luck.

How about an inductive sensor - they are quite sturdy - and if you don't use a bed with any sort of magnets they work very well.

Frederick

Adamfilip

I am using Spring Steel spring bed with magnets underneath

fcwilt

@Adamfilip said in Manual Grid Mesh Levelling:

I am using Spring Steel spring bed with magnets underneath

Yeah - so am I - really like it but it means no more inductive sensor - back to the noisy BLTouch.

Frederick

Adamfilip

I didnt realize the magnets interfered with inductive sensors, how does prusa get away with it?

dc42

@Adamfilip said in Manual Grid Mesh Levelling:

I didnt realize the magnets interfered with inductive sensors, how does prusa get away with it?

Perhaps they arrange the probe points to be away from the magnets?

Phaedrux

@dc42 said in Manual Grid Mesh Levelling:

Perhaps they arrange the probe points to be away from the magnets?

Precisely this.

Adamfilip

So going back to my original ask.

to setup Grid Mesh leveling Manually. is there an easy way to do this?

fcwilt

@Adamfilip said in Manual Grid Mesh Levelling:

So going back to my original ask.

to setup Grid Mesh leveling Manually. is there an easy way to do this?

Easy? That depends on what you consider easy.

My first reply to you covered how to set the Z probe configuration to allow bed probing when there is no Z probe.

Frederick

Phaedrux

Setting m558 P0 and then using g29 as normal will ask you to manually jog the nozzle to touch the bed at each point.

Adamfilip

Thank you @fcwilt & @Phaedrux I will give that a try

fcwilt

@Adamfilip said in Manual Grid Mesh Levelling:

Thank you @fcwilt & @Phaedrux I will give that a try

It works - I used to do it before I went ahead and installed a Z probe.

Have you considered a removable Z probe - then it cannot get damaged during normal operations.

Frederick