first layer height
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The bed is flat to my eyes. It’s a new bed, and that is why I went 3 point leveling because the last one got warped. I have a flat tile it was put on, and no edges were lifted. No air gaps either as it didn’t move easily on the tile. Also, the .1mm feeler gauge moves around on all corners and in the middle, granted some spots are a little tighter but not enough to make it difficult to move with one finger. So doubling that at .2mm should not cause a smashed first layer.
So if I use the baby steps, would I add the value to the g92 line?
I’m going to try testing it tomorrow using a file without filament at a slow speed and insert a .1mm and .2mm feeler gauge as it moves. That will give me an idea if the is actually moving to .2. Another option is to use a .01mm feeler gauge and just say the bed is at zero at see what happens.
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The motors are not hard wired together. They each have their own slot on the board. I assume that’s what you meant. Where can I find more info on how to setup this type of z probe?
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Looking at M122 results, the hiccups are as follows:
Hiccups: 9898(0)
I'm guessing that means zero and not 9898 hiccups.
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@mlaustin6 If the motors are using two sockets close together on the board, and near the z-driver then you are probably using the sockets that are wired together. If you have mapped drives to use one of the spare extruder drives for the second z axis then you can look at using either two z axis limit switches or a z-probe to level the bed.
I've not tried using two limit switches. You may get some information from this following thread and then reading through the gcode guide:
https://forum.duet3d.com/topic/11007/dual-z-axis-homing-problem/2
My toddler son is off nursery today (nothing serious) so I won't get much spare time but I will have a look at my machine and give you an example of z-probe assisted levelling.
Reason I mention the levelling is that it could easily give a squished first layer on one side of the bed.
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@mlaustin6 said in first layer height:
Looking at M122 results, the hiccups are as follows:
Hiccups: 9898(0)
I'm guessing that means zero and not 9898 hiccups.
Nope those are hiccups. Enough to potentially be an issue. Is that after a full print? Or just homing?
What firmware verison exactly are you using? Send M115.
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@Phaedrux
Hmm interesting. I ran M122 after a print finished.. I am on firmware 3.0.
