Double checking my bed compensation understanding
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Could I please double check to see if my bed compensation understanding is correct ?
I do a bed scan with G29 and get a full mesh. If, in the web interface, I click on the down arrow next to 'auto bed compensation' it informs me that mesh bed compensation is in use.
I load the mesh file in homeall.g after z=0 has been established.
Let's say I started up the printer and run homeall.g. Z =0 has been established and the height map has been loaded.
I decide that I want to update my mesh compensation and do a g29 and scan the entire bed. After the scan, the height map 'file' is updated.
The question: .... the height map file was over-ridden but was the currently loaded height map also updated to reflect changes ? Do I need to reload the height map or will the correct height map (the new one) be automatically be used for any further prints ?
I have been assuming that this is what happens but am questioning that assumption.
The reason I am questioning that assumption is because when I print a very thin first layer, I see a lot of density changes indicating that the mesh compensation isn't compensating for a poor bed surface.
I am using a piezo probe and multiple probings of the bed seem to visually correlate - the height map from one probing to the next produces a similar picture. I have not tried to compare the point by point height values obtained from successive probings yet (it takes close to 2 hours to probe 441 points slow enough to get good readings) -
@jens55 said in Double checking my bed compensation understanding:
The question: .... the height map file was over-ridden but was the currently loaded height map also updated to reflect changes ?
Yes. When you run G29, the resulting map is automatically applied.
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Thanks! Back to square one with z probe calibration to find out what is going on.
