Hi, I was printing some test objects on my H2S today and I used Print sequence “By object”. I have arranged the objects in such a way that slicer does not report any collision. However during real print there was a collision and the print head hit one of the objects. This happened twice, on two consecutive print runs. I have run a time lapse on the second print so I am attaching all the screens+3mf. It seems the slicer is not properly calculating the path or size of the H2S print head. This can be very dangerous on large objects and can even damage the printer.
I am using newest firmware and software (2.2.1.60).
Hi Bullocks, you screen is not what I see. I see the same as at Philch’s screen below. See my photo. These settings resulted in a collision. Auto arrange function is actually arranging items back and front, not left and right. I was also surprised (Other printers are different). But generally I arranged them myself in such a way that I cleared all the Slicer safety buffers and Slicing had no warnings.
Are the preset Extruder Clearance settings for H1S wrong?
It was a combination of the two, but actually for H2S auto arrange arranges them back and front, not left and right. Try playing with the 3mf attached to the main post.
Hm, sorry for the confusion, when I load it up in Orca, thats what it loads as. But in either case, if those numbers are incorrect with reality (aka the machine in front of you and your calipers measuring it) the slicer can create paths that will collide. If you want to keep troubleshooting and maybe arrive at a solution today vs waiting for support robots, I’d get out the calipers to confirm those measurements.
EDIT: Why does bambu studio have yours greyed out? If you save a copy of the machine, are you able to edit it?
Ok, I did what you asked for From the nozzle to back of the extruder there is 81-82mm, In my view 81mm in the preset does not feel safe. But if I measure diagonally (from the nozzle to the corner) there is 84mm. Ups. So I already raised a ticket, hope Bambu will correct their preset.
Wow I can’t decide what is more ridicule-worthy. That the interns who measured the thing did so only for the smallest diameter, or that their software locks you out of modifying it! The open source software that b studio is built on sure let’s your do that!
Just to give all of you an update. I am communicating with Bambu back and forth, they are trying to figure this out but cannot reproduce the issue on their H2S. So I sent them the video showing the moment printer finishes the first object and moves to print the next one. It hits the first object when the brim is printed.
I also started to tinker with this further and tried to see how slicer would react when I increase the brim even further. And it lets me do it! Now it seems the problem is not so much in the presets of the print head size but the fact that it ignores the brim when calculating collisions.
Yeah, it is most definitely the brim. It should not be ignored when calculating collisions. It seems to be relating to all printers, it is a Bambu Studio bug.
From the nozzle to back of the extruder there is 81-82mm, In my view 81mm in the preset does not feel safe. But if I measure diagonally (from the nozzle to the corner) there is 84mm. Ups. So I already raised a ticket, hope Bambu will correct their preset.
Hence the “Danger” in the title…
