RE: First layer issues with newly upgraded MK4S.
Nothing under the build plate.
I think I’m going to reach out to Prusa Support and see if they can give me some advice.
RE: First layer issues with newly upgraded MK4S.
Reaching out is a great idea, let us know what you find out. I am having similar issues with adhesion on the build plate. I narrowed it down to an extreme variation in the bed temperatures, there is a 10º disparity from the center to the outside dropping the 10º around 5 cms from the center. I increased the bed temperature to 95º for the first layer and 92 for the rest, issue resolved, albeit I feel as if I am covering up a symptom, just like taking an aspirin to bring down a fever. The fever subsides but the issue remains.
Stay safe and healthy, Phil
RE: First layer issues with newly upgraded MK4S.
As soon as I contact Prusa, and described the issue I was having, the agent asked to see a picture of the problem. I sent the same picture that I have in my initial post. She immediately knew the issue. She said that you are printing a giant bridge, your going to have issues with that. I thought it was a flat print and I am not one to look at the gcode when I slice. Below is my first layer.
And this is the bridge that is my second layer.
Probably easy to see why I was having the issues that I was. It was recommended that I reorient the model and try again with supports. I asked why Prusaslicer would not detect that this area was unsupported and needed supports. She stated it was probably tough for it to detect due to it being such a tiny bit higher than the first layer. That makes perfect sense. Hopefully everyone can learn from my mistake. Printing a bridge that big is likely going to fail.
RE: First layer issues with newly upgraded MK4S.
Which shows why it's always a good idea to upload a zip compressed 3mf project file here. This would have been an easy issue to spot.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE: First layer issues with newly upgraded MK4S.
Which shows why it's always a good idea to upload a zip compressed 3mf project file here. This would have been an easy issue to spot.
It is what it is. It was a good learning experience. If nothing else, I know to look closer at my models before printing them. I just got caught up in this huge project and didn't pay close enough attention.
Trying to print again with the model standing up. At least this way, I can get all 6 of them on the build plate at one time. We will see what happens doing it this way.
RE: First layer issues with newly upgraded MK4S.
Or, if you don't need that 1-layer thick lip on the two arcs, trim 0.2mm off the bottom of the objects to get the entire surface on the bed.
See my (limited) designs on:
Printables - https://www.printables.com/@Sembazuru
Thingiverse - https://www.thingiverse.com/Sembazuru/designs
RE: First layer issues with newly upgraded MK4S.
I’m pretty sure it’s not necessary. It is basically a bucket lid. I needed 6 pieces. So I put them up on their side and added all 6 of them to one build plate. Checked this morning and all looks good so far. Further than I got before so I am happy about that.