Have you tried basic PLA, instead of silk? The included benchy is tuned for that not silk. It might not make much difference, but silk usually needs different settings to get the best out of it. It could be worth a try.
Hi. Yes I did. It’s exactly the same as the Silk. I tried the Silk just because it’s easier to see than on the Basic black (and because I don’t have a lighter PLA Basic to try). I’ve printed a few Benchy’s now… and all seem to fail in the same way. The best version (not great) was when turning off the flow, levelling, etc all to OFF (instead of default Auto)
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Not sure what’s going on there then, as you can see from mine it’s certainly not having the same issues. It looks like a cooling issue, but have you checked that the hotend is tight, including the heater block? I’m just guessing here, so might not be any help at all. Hopefully support will come back to you quickly.
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Goign through all possible things I’ve read up on here… checking for bent parts, loose screws, belts, adjusting fan settings, etc…
Main reason I posted was because my results looked virtually identical to the original poster (WisestMoose), and then on April 26th, just4memike posted their result alongside orignal and it’s so much cleaner and better, no hull distortion or buckling. So makes me think there’s definitely some “common-cause” going on here with first print out the box and the built in Benchy.
Whatever the cause is it seems to be rare as I haven’t seen anyone else but us posting with this issue. It took me about a month with support and the back and forth. Atleast a week of that was waiting for replacement parts to try. Hopefully it will be faster for you.
In case it helps someone, the latch that holds the hotend in place should be somewhat easy to latch. If youre having to force it shut, the hotend isnt seated correctly. It is possible to have it slightly off, but still latch.
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Found another on Reddit as well…
https://www.reddit.com/r/BambuLab/comments/1jprcsq/we_got_the_h2dnot_impressed_by_the_benchy/
Similar print issues seen on their built-in Benchy print. Many comments saying to slice it yourself and forget the built-in model, but for me that adds another variable in the comparison and bypasses why some people report the built-in Benchy gives really clean surfaces and is great and other folks get the results we’re seeing.
By using the built-in model it rules out the slicer, so I figure can only be down to hardware tolerances or environmental differences (i.e. sensors measuring differently and thus compensating differently between machines).
Anyway, still early days and still hunting. 