First Layer problems

Hey, I have a Vcore 3.1 500 and even after a long time of fails you might can help me. I never get the first layer right as the printer seems to "over-calculate" the Z-offset when doing the first layer, normally it should flaten out the humps and bumps in the bed but in the areas where bumps are it drives the nozzle too high leading to non-sticking areas and on the other end on humps it drives the nozzle into the bed leading to stop the flow completely due to closing the nozzle by pressure of the bed. in the middle where the z-ofset is set its perfect. I even ordered a beacon to probe it even better but this didn't help at all, also setting up the complete printer from the ground didn't chance it. Does anyone ever had this problem? Any ideas how to solve this? If I'm printing taller things with a smaller footprint everything is perfect and the printer works like a charm, but I bought this one as I need it big, thats the reason I bought this printer.
1 Reply
BaldMac
BaldMac7mo ago
Hi. I also have a V core 3.1 500 and though my first layer print isn't perfect, it is always compete and useable. It does show some areas which are nozzle too close and some too far away but is acceptable. I use a 0.4 nozzle and print the first layer at 0.275. . I use Sunlu PLA+ which I print at 300mm/S for most everything. I do note that your bed mesh does have a lot of detail and I'm wondering how repeatable and realistic that actually is. I don't do a mesh with as fine a matrix as you but it is very reproducible. Have you run this a number of times back to back to see just how reproducible it is. My Z offset is quite temperature sensitive, not sure if it's the super Pinda or the actual bed but it does vary quite a bit. Note that I don't pretend to be an 3D printer expert but generally I get very good prints from the Ratrig 3.1 Hi . I did post a reply but dint mark it as such. see below

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