First Layer Calibration problem
I've just finished building my printer, on step 6.3.9.
The nozzle always seems to leave a stream of filament whereever it goes, it's not a massive amount but it causes there to be a few strands on the bed. This happens when it checks for the 9 point when you select the MainV2Calibration.gcode file on the SD card.
Since taking these pictures, the corners are a bit better after I lowered the Z axis, however you can see the strands leftover during the 9 point check, along with a small amount that leaks after it is done.
and 
P.S. I had a slightly outdated firmware which caused that nasty hole at the top of the bed if you were wondering.
Re: First Layer Calibration problem
Please read this thread:
at least to page 6 or so where V4 of the new calibration file is.
Try this:
1) Get it roughly correct.
a) Set Live adjust Z = 0.00. Make sure PINDA is above nozzle tip by <1mm but above.
b) Do a Calibrate Z. (Head must be clean of drips and lumps).
c) Do a Home. This leaves the head at Z=0.15mm
d) Use Setting -> Move Axis X and Y to get in the approx center of the print space. DONT TOUCH Z.
e) Put a piece of printer paper under the head. Printer paper is approx 0.1mm
f) Wiggle the paper while adjusting "Live Adjust Z" (in settings) until the paper just starts to drag on the paper.
g) Back off a bit (50) on the Live Adjust Z"
2) Get it dialed in real well.
a) Print using "Calibration_surface_PLA_75x75@200um_v4.gcode" found in Jeff's "Life Adjust My Way" Thread
b) Repeat until you have a nice test print - all stuck together and one nice clean sheet.
This takes a little while, but is worth the effort. Once the first layer is good - the rest follows.
Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage or loss. If you solve your problem, please post the solution…
Re: First Layer Calibration problem
my printer does the same thing. Hoping you find a solution.