Bed leveling issue. (Page 1 of 2)

Sounds like you have thinks out of sequence warm the machine home it tram the bed (level ) 4 -5 point with a gauge then start to print.

Sorry I am just replying to this.. I am letting the machine lay it’s first layer than I kill power, I then manually move the head around using a feeling gauge to set the exact mm height I chose in my slicer, I get it dead on .1mm or whatever my height is I restart the print and the print begins it’s first later again and the bed is to close to the extruder. Even though I just killed the power at the same exact point in the print and adjusted to the correct height. I’m starting to wonder if my z axis steps is off even though I do get good prints when I’m not having bed level change issues but at the same time I haven’t make anything lately that was a critical height so I haven’t checked height.. I’ll try a calibration cube and see what happens

I have been printing at a .15 layer height with no problem yes it takes double the time but the quality is much better. I will attach a photo..

Now back to my question.. I’m not fully understanding what you mean either haha. Let me re describe everything.

My slicer is set up for first layer height to .1 and all other layers after that are set to .15

I use start a print I let everything get up to temp I let the first layer begin, I then cut the power off, I quickly clean the bed with alcohol because I’m weird and anal, after cleaning but still up to temp (maybe not completly to temp but close enough). I then use a .1mm feeler gauge and adjust my bed to slightly drag the .1 feeler gauge in 5 positions all four corners and center. I get it a little tight so that the first layer is a little smushed so that it adheres better.  I then home all axis’s and restart print. SOMETIMES it will keep that adjustment, SOMETIMES it brings the extruder to close to the glass even though I JUST adjusted the bed lower than what it is moving to. I don’t know what else I can do to help explain it better.. hope I made sense. Sorry

Also the prints above were in tpu

Your slicer first layer should be the same as all the other layers. The idea here is to have all the layers the same but you adjust the bed height so the first layer is squished.

So your slicer should be set for .15 as you say on ALL layers including the first. Then you level the bed to .10 or more closely to .075 as the first layer should be squished to half of your desired layer height.

ok that makes sense I am now realizing that I had the whole concept wrong here. My assumption was that if I set the bed level to .2mm for instance but it was supposed to be at .1 then the layers would be .1mm to tall. But now I am understanding that the bed doesn’t determine that move it’s the z axis steps that is making the .1 mm or or whatever layer height you are printing at. The initial bed level is just for first layer pretty much after that the z axis steps is what determines the actual layer height.. if that makes sense

Looks a bit over extruded. You x gantry may not be square. Pull the gantry full forward and make sure both sides meet the front at the same time.

So checked the x gantry it seems like the left side is tighter than the right. Possible it skipped a tooth on the belt at one point?

I loosened the belt adjuster and moved the gantry back a tooth and measured with some calipers from side to side, it’s dead even now. Never thought to look at that, thank you. How tight should the x belt be? Mines pretty loose and I’m out of adjustment for tension not sure what I should do about that.

What are these called and where do you find them

I check height at the corners and sides, and the head is always too low in the center -- which seems to me is a problem with the bed not being flat. So after I set the corners and sides, I move the head to the center (where it drags) and loosen the sides and corners by 1/4 turn on each nut. I'm not happy with that, but it works, and most of my prints are smaller and on-center anyhow. Putting 1/8" glass over the bed flattened it somewhat, so next time I get glass I'm going to 1/4".

Does anyone know what speed setting I would change in my firmware config file to make for less “jerking” at the end of each move? I am getting some ghosting in my prints and wanted to slow down that acceleration.

Would I just change max speed to a lower number under each axis?

Or would I change acceleration and z acceleration under planner module config

I have all of my print speeds down to 20mm/s. They’ve been at that for a long time and I still am having ghosting. Is there settings somewhere else I’m missing