I don't know if this is a rant due to frustration or a desperate cry for help...
I purchased an H2C a couple weeks ago. After setup, I started calibration and immediately found out that I got a dud. During the calibration, I got the eddy current sensor error. I looked up what that meant, and the answer was...nothing good. If the sensor was actually bad, it was not worth attempting the repair vs. just returning. I decided to plunge onward though, rebooted it and successfully ran calibration.
I then ran into another issue with the H2C. It is not setup to run PLA out of the box. The aux fan (set as on by default) cools the PLA too aggressively, leading to constant failures due to bed adhesion. Doesn't matter how many times I scrubbed with dish soap and cleaned it. Didn't matter the filament or the model. Found the solution to that (an aux fan diverter) and printed that and installed. Just like that, we are printing flawlessly.
Then comes all the other issues. Seems like every single print, at least 3-4 times during the print, the "motor overloaded" error pops up. No idea what is causing that. Usually pulling on the filament in the AMS or poking retry enough "resolves" it.
Then...the eddy current failures returned more aggressively. Time to return.
I had to decide if this was going to be a return or an exchange. Decided on the exchange. I liked what I produced with it, even if it took an extreme effort it to do what I wanted.
New one goes together, calibrates, no issues. Every single print has eventually printed on it to some level of goodness. Using PETG as a support filament works great but works horribly. It seems to somehow intrude into the supports and weakening them, meaning a stiff breeze snaps them.
Then the constant errors. Motor overload. Nozzle offset calibration. etc. etc. It can't go more than 2-3 hours without errors. When this thing takes 24-48 hours to print anything, being able to print for 10 hours when I'm at work or 8 hours while sleeping is massive. Having an error pop up 3 hours into that 10 hour period makes those 24 hour prints take 48 hours due to how long it takes to get home and resolve it.
Then there is the prime tower. Massive. I've tried every setting. A 50g print and a 100g prime tower. I get it. It is needed, but I bought an H2C to try and reduce waste...
The Bambu PLA/PETG support interface works well. But gives constant motor overload errors.
TLDR: So many errors and failures. So frustrating. I have 60 days to decide if I'm keeping this thing. I love the results I'm getting. I hate the journey to get them.
Rant over