First Layer Height
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@npm1 said in First Layer Height:
yes the xy points are consistent no bending or sagging.
the bed aka y axis is bolted down at its tightest point.
So what did you mean when you said "at each point there seems to be massive deviations i.e. -3.35 mm to -4.53" ? Did you mean that the trigger height varies depending on the XY coordinates where you probe? if so then you can correct for that using H parameters on the G30 command sin bed.g; but it is better and easier if you use a probe with a consistent trigger height.
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@npm1 said in First Layer Height:
ps i am getting Comments cannot contain only capital letters on this forum
Yes stops people shouting
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can i have an example of the h parameter being used in the g30 command
would this be a good example of the H parameter
G30 P3 X0 Y180 Z-99999 H-4
yes at one point its -4 and another probe points its minus -3
i plan to use g30 and g29 in the bed.g file
what would be better, running g30 with 5 points colaberation first or g29 first.
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GOOD NEWS,
<code>
MaxReps: 4, StepErrors: 0, FreeDm: 229, MinFreeDm 205, MaxWait: 1ms, Underruns: 0, 0
Scheduled moves: 434, completed moves: 431
Bed compensation in use: mesh
Bed probe heights: -2.125 0.000 -1.756 -0.093 1.005
</code>I set up G29 as a macro i perform once per day, then i work out whether the probe is inconsistent or not.
And G32 for every print.
my G92 Z -3.5.
fingers crossed i wouldn't need to do this again.
I would probably dial it back just to see how complicated i went i.e. throwing in g32, g29 and independant z axis.
