The prettiest benchy I’ve seen... until  

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robrob
(@robrob)
Active Member

any idea on why I woke up to this?

Posted : 18/02/2020 2:58 pm
vintagepc
(@vintagepc)
Noble Member

My money's on your part having come loose from the print bed near the end.

Proper cleaning and handling practices are a must:

http://projects.ttlexceeded.com/3dprinting_bed_adhesion.html

http://projects.ttlexceeded.com/3dprinting_bed_cleaning.html

(especially point 6 works wonders for many)

 

 

Posted : 18/02/2020 5:09 pm
robrob
(@robrob)
Active Member

Yes, both the bench and the skirt were loose and in different parts of the bed. 

And subsequent test prints the first layers aren't sticking at all really, even though I am wiping down with IPA each time. 

 

I will try Dawn before the next one. 

This post was modified 8 months ago by robrob
Posted : 18/02/2020 5:54 pm
Lichtjaeger
(@lichtjaeger)
Prominent Member

I think the chimney was overheated. Could be to fast (low layer time because smallest part of the object), to hot or to less cooling.

This post was modified 8 months ago by Lichtjaeger
Posted : 18/02/2020 6:14 pm
robrob
(@robrob)
Active Member

@lichtjaeger

it is straight off the USB drive that shipped with the printer, wouldn't  it be sliced/setup with the mini in mind though?

This post was modified 8 months ago by robrob
Posted : 18/02/2020 6:45 pm
Lichtjaeger
(@lichtjaeger)
Prominent Member

Then tell us more. Did it came loose? What filament did you use? Is the printer also in an "out of the box" state or did you do a modification (other nozzle for example)?

Posted : 18/02/2020 6:51 pm
tischan
(@tischan)
Active Member

@robrob

I had what look like the same issue with one of my first Benchys.

For me it was the issue that my z-layer was to high and that it did not stick to the sheet. First picture is the on the failed, second it work really well

I actually lowered the Z a small bit more since then.

See my post on the topic here:

https://forum.prusaprinters.org/forum/general-discussion-announcements-and-releases/unofficial-prusa-mini-wait-thread/paged/114/#post-194410

https://forum.prusaprinters.org/forum/general-discussion-announcements-and-releases/unofficial-prusa-mini-wait-thread/paged/115/#post-194505

https://forum.prusaprinters.org/forum/general-discussion-announcements-and-releases/unofficial-prusa-mini-wait-thread/paged/115/#post-194530

 

Hope it helps

Posted : 23/02/2020 10:19 am
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