Hello together,
so I run into more than one problem now here’s the case:
-I played around with trying leveling on glass with the fifix and getting a acceptable first layer. I used metal clamps to hold the glass into place after a few attempts I got one with a 11x11 auto leveling (@WilliamBosacker ) and some bed level prints but I printed with a raft to compensate the unflatness of the bed just to be sure. I also wanted to do a time-lapse video of the print via octolaspe parking the head in the back left corner. unfortunately the clip in that corner was not placed right causing the printhead to run over it and cracked the housing of the bed sensor but that’s not all before I was able to shut the printer off the head wanted to return to the print and got stuck with the clip the x and z axes tried to move but couldn’t and it made a not so good sound from the stepper motors. after powering off and pushing the z axes up so the toolhead is free I turned it on and checked if every axes is ok and yes all axes worked. then I decided to not print on glass anymore to prevent more damage and I tried leveling the sensor works too. So after switching back to the original build plate I run a 11x11 auto leveling process as usual everything works fine then the first macro is done I wanted to set the z offset but then I noticed that the z axis stops 2mm above the printbed and the coordinates says this is the 0.00 ground zero and not letting me get more down. I was confused then I rebooted the printer started a 5x5 leveling and setting the z offset as always and I thought its a software problem. so after the normal leveling and z offset was done I tested a print and the printer started to print at leas 5mm above the bed. maybe bc there’s a bug that the SM is ignoring the auto level mesh like in this topic
→ Potential Issue with Bed levelling process - #55 by zk1005
i even tried to do a new bed mesh via octoprint and the bed visualizer but it got stuck by “please wait generating mesh”.
so after all that I looked for a update so maybe then the leveling bug is fixed and updated it to 1.12.1 the latest version but its all still the same plus that my e-steps are back to devault and maybe k factor too? and on top of all this I can’t calibrate the e-steps over wifi anymore and I don’t know why. but I can’t print anything so that doesn’t even matter! -.-
i orderd a 5m usb cable to connect it with my computer to look for the current settings with M501 and maybe calibrate the steps like this.
After you removed the glass did you do a level using the touch screen or use G1029? The head will not go down much below what it thinks is zero when printing though I don’t know if this also impacts G1029. It’s always best do a touch screen level if you make any material change, as well as resetting where Zero is it also does other things like reset M206.
I tried clips to hold the glass on but they bent that glass and get it the way. I now hold it on with tow 2cm pieces of blue tape on each edge folded over the edge of the bed and it’s not moved yet. Leaves nothing to crash into and I just lay it over the edge so it doesn’t bend the glass to my distorted bed.
As far as I know, we’re still waiting on an official firmware release that fixes that bug. However, I don’t think it can produce results like what you’re seeing—it’s about the mesh test points being offset in the X and Y planes.
Pretty sure that’s a normal (but irritating) result of a firmware update. You’ll have to redo the settings.
The Snapmaker 2 has never responded over wifi to gcode commands from Luban. (It may carry them out, but you won’t get any feedback.) In addition, some people have had problems getting or keeping the wifi connected with recent firmware builds.
People use it for Z offset I didn’t know if you did or not. Only other thing I can suggest is a reset with M1999 followed by a touch screen level. The levelling bug will not impact your current problem.
i will try the m1999 command and se whats happening thx
I performed the 11x11 leveling like you said and did it many times now and worked allways.
And there is definitely a issue, i think the z axis dont know its real position as you can see it In the picture it shows Z=0.00 and i cant get below that but its far away from the bed. Now if i run a normal 5x5 i can set the z offset as always but when i start a print it ignores the leveling i just did and starts printing in mid air
I think its more a hardware problem bc it doesnt worked even befor i updated to the newer version.
As the head hit the metal clip it was on the first layer z=0.1-0.15 then i needed to power of and pushed the z axes up to free the head maybe after powering on again the sm thinks its still on this z position and due to that i cant get lower anymore
iCloud Hope you can see this video.
so in this video I show how I try to get lower but can’t since the SM thinks its on point 0 but in fact it isn’t its not even close to the bed. @stewl I tried M1999 but nothing changed.
i also tested if the limit switch´s are working by unmounting the steel protection of the axes pressed it down with a small screwdriver and see if it move and it doest but than the sm thinks that this is the highest point resulting that I now can get down to the bed but not all the way up. After Homing it was all back to the issue that I can’t get down to the bed
I would say make sure you reset the probe height but that wont work if the head doesn’t get down to the bed.
When you do a calibration from the touch pad does the sensor get down to the bed and the light at the back come on and can you do the last step where you set the nozzle height using the calibration card? If it does then I don’t think it’s a hardware problem. If the probe triggers before it gets to within 1mm of the bed then it’s a hardware problem with the probe and this is why it’s not working.
when I do a leveling on the touchscreen I can do everything as usual. but when I start a print it ignores the leveling before and starts printing mid air that’s why I thouht it is affected by the leveling bug.
Nope, are you sure you are finishing the levelling properly? sound like you have a level thats above the bed and this is not being corrected when you do a touch screen level. What does the output of G420 V look like, just the first block of numbers is fine.
Ok could thus come from the push that i gave the z axis to free the head or are this old mesh datas from when i used the glass thats 4mm thick?
Im currently not at home but i will check this as soon as im at home
If you are not completing the levelling process the existing old mesh will remain. If this was one done with glass it will be too high. Print out your G420V level matrix, do a full touch screen level, have any of the numbers changed? If not , the levelling process is not completing correctly.
Ok thanks for the Explanation! But gow can you not finish a level process right? Maybe the level process is not finished right bc the z coordinates ar below 0?
