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Ist Layer nightmare please help  

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donp
 donp
(@donp)
New Member
Ist Layer nightmare please help

Hi all. 

Before I contact support I figured I would check the forum to see if there is any help. 

I have been trying for 2 days to no avail to get proper 1st layer calibration. 

The initial cleansing line seems fine, but then when it goes to print the "Z" lines, the extruded lines are extremely small as if the extruder is not pumping out enough filament. I checked the gears and they are clean. I have loaded and unloaded filament a number of times and the extruded filament seems fine. But when I do the line calibration there is NO amount of squishing that will result in a good bond because the initial extruded material is just so thin. I have seen videos of people doing the calibration and their lines are massive compared to mine. The lay down line is about the same thickness as the thin white lines on the smooth sheet. 

Has anyone had this problem or have any ideas?

I dont understand why the cleansing line is nice and fat and flattened good and sticks to the bed, but then the lines it makes for the calibration are just too darn thin. Oh and yes I have tried adjusting the Z from 0 to -.85 which is pretty much down to the bed without actually touching. When this unit came from factory already assembled, the Z was at about .625 and things were working. Nothing has really changed other than updating the firmware to the latest 3.8.1 this is the original MK3. 

Thanks

Posted : 04/12/2019 12:51 am
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Illustrious Member
RE: Ist Layer nightmare please help

Slice and print this.  The ideal is a solid sheet of plastic, not threading (gaps between extrusions).

Printing a large sheet allows time to make adjustments and see the result. Much better than the built in test.  But you much finish the built in test at least once... then this option becomes the best method to set layer one.

Cal-Circles

As for variations, yes. The PINDA  is temperature sensitive and doing a print immediately following a print will show layer one differences. Also, the heat bed shifts as it warms, also making run to run comparisons difficult.  The fix is to use custom gcode to wait for the PINDA to stabilize.

Posted : 04/12/2019 6:24 pm
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