Help with First Layer Configuration
Hello,
I know this is a highly discussed topic, with tons of information already. I tried to follow everything I could find in that topic and I still think I'm not getting the right configuration.
So this time I printed a simple part and started noticing patterns that could be either Z layer too high or too low... I would like some help to figure out what it really is.
I upgraded my MK3S+ to a MK3.5S, my Z First Layer calibration is at -1.400
When I print this model: https://www.printables.com/model/521759-prusa-spatula-printables-sample-model
Please look at the pictures and please let me know your suggestions.
PS: When I run the First Layer calibration, everything seems fine, but when I print this part... that happens (pictures)
Thank you,
RE: Help with First Layer Configuration
I tried to print a Benchy as well, it did well, but check out the initial layers...
I re-calibrated the Z layer, now it is on -1.390 (but I guess... still too low?, or too high?)
RE: Help with First Layer Configuration
Not low enough, nowhere near enough squish on the first layer. Adjust your live z a lot lower.
RE: Help with First Layer Configuration
I'm new here so, help me understand, to lower more I have to go from -1.390 to -1.490? something like that not -1.390 to -1.290
Correct?
Not low enough, nowhere near enough squish on the first layer. Adjust your live z a lot lower.
RE: Help with First Layer Configuration
Correct. -1.490 is lower, ie closer to the build plater than -1.390. The PINDA probe range is approx 2mm which is why the Live Z setting goes down to -2.000. If you find yourself getting a bit close to the maximum in your adjustment of a perfect first layer then you will have to reposition the pinda slightly and redo the first layer calibration again after resetting Live zero back to zero. Hopefully though you will have enough adjustment range.
Basically you are aiming for something like this 
Forgive the surface texture, that was printed on a 5+ year old smooth sheet that's seen a lot of use. Do note though how the extrusions of the first layer are all squished together and its an unbroken surface. Its just picked up every little imperfection and ding that surface has on it 🙂