I am finally getting around to trying out the reason I purchased the K2 Plus. Have not had much of a chance because holidays and life. I will start printing a benchy followed by calibration tests on the factory settings for PC.
Filament PolyMax PC
These are the settings from Creality Print 5.1. I wonder if the speed is going to be too much for the filament. Polycabonate is new to me so any advice is much appreaciated
Did the complex test model found in Creality Print. The machine completed the task, although there is some artifacting and stringing.
Decided it was worth a shot and tried to print a toaster to see how well it does. And got a filament jam after the first few layers.
Its either going to be speed thats too high, rettaction, or fan speed
I will try retraction tests and see if that helps.
Wish me luck and if anyone has some advice i appreciate any information you can provide to a novice.
I noticed all the standard profiles for CP 5.1 (haven’t checked older versions) has the infill wall overlap set to 30%.
My personal opinion is that is too much, I usually print that at 15%, which is also the default for the High Quality profile.
Depending on what is being printed, 30% can lead to some overextrusion impacting layers above.
Thank you for that information, I did not think about that. At the moment I started with the rotation distance (or e-steps). Following a guide on YouTube, I measured out the filament and noticed there was about 2.4mm difference. I updated the printer.cfg file with the new value and will update.
If there is no difference, I will revert back to the original rotation_distance value and use the 15% infill that you suggested.
Thank you again mb_0!!
Wait what? That’s the one feature I would expect to be properly configured.
I can understand slicer settings being subjective and filament dependent, and bed leveling having issues because of improper handling during shipping (who knows what happened while traveling by ship, airplane, truck, and etc until it get to us).
Tweaking rotation_distance was very surprising.
I will try to test on mine and see how it comes.
Welllllllllll this is embarassing. After running through all the calibration tests and having the same issue over and over I forgot one thing. Keep in mind first large format print and second printer in general. The issue was glaring at me the whole time…
I did not check the bed mesh. Looks like i have a tube for a print bed 
I will research for information about how to adjust. Any information is much appreciated.
As a friendly reminder always check the bed mesh and Z offset before printing. Its a lesson I learned today.
Yes, this is not ideal, but it kind of is predictable. Mine goes up and down in different places, it is so weird, so the compensations algorithm has issues, I think it got bent in different places.
I have never used Klipper, but I heard it should be able to correct up to 2mm, so even this bed should be able to work. As I mentioned a few times before, my bambu x1c is not flat at all, yet it prints beautifully (as far as first layers go).
Yesterday before goin to bed I had the printer doing 10 calibrations non stop calling the bed_mesh command manually with different profile names, they get queued and executed after each other.
All the measured points where different from each other, not a single one was the same. Some of the averages were the same h 0.380, but that’s about it.
When I talked to the engineer, I mentioned the bed, mesh and etc. Flat out I was told the bed would be replaced but, more interestingly, I would also receive a strain gauge.
I believe the main issue is inconsistent reading and not the flatness of the bed.
Now, let’s talk about your bed - I would definitely reach out to support, you might receive the same as me. That said, I heard multiple people talk about just applying pressure to the plate and you can “unbend” it by hand, or using a rubber mallet (it must be fully removed from the printer first). If in doubt, do only the ticket.
I will send in a support request to their after sales email to see what they say. Hopefully the issue will be resolved shortly I want to make a few HueForge prints for making Christmas presents/holiday cards for my family and friends with the two CFS modules that I purchased alongside the printer. Kind of a yikes moment when I found out about the issues though. But it is to be expected. I am still glad I purchased though. The issues can be solved and will be solved. I will turn the gifts into New Years presents!
Ive seen somewhere the K2 strain gauge replacement is a modified design, the frame is a little more substantial, not sure if anything else is different.
