First Three Prints Crashed
Just completed the build of my mk3S. However, my first three prints failed half way through due to crashes. I turned the crash detection off, and got a perfect tree frog (it had failed before). Seems like my crash protection is too sensitive. Any way to adjust it?
...there are only 10 kinds of people in this world--those who know binary and those who don't...
RE: First Three Prints Crashed
If it is crashing it means your assembly requires attention.
You need to check for free motion on all axis: power off, and slide X and Y stop to stop. If you feel ANY stickiness / resistance you have a build issue.
Usual suspect is "Did you properly clean and pack the bearings before installation?"
RE: First Three Prints Crashed
Crash detection has always been a source of false alerts. I turned it off on both of my Mk3S's months ago. It is unreliable and actually causes more problems than it fixes. Leave it off, you will not miss it.
RE: First Three Prints Crashed
I had the same problem printing the tree frog sample, crashing on two occasion at 44%. I solved this by loosening the x-axis belt by about two notches (form the extruder assembly) till I couldn't really make it any looser without skipping. The frog then printed without complaints from crash detection.
RE: First Three Prints Crashed
While all of my prints (some 30 or so) without the crash protection have been essentially perfect, I did discover that my x belt was way too tight, by using the method in Section 13.4 of the handbook. I've adjusted it appropriately now. Think I'll turn it back on for smaller prints at first, to see how it goes. Thanks to all who replied...Jack
...there are only 10 kinds of people in this world--those who know binary and those who don't...
RE: First Three Prints Crashed
You could turn on silent mode and have quieter prints. The crash detection is disabled in silent mode (the two features seem to be mutually incompatible).
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RE: First Three Prints Crashed
Happy to report that after loosening the belts and turning crash protection back on, I haven't had a single crash in some 200 hours of printing. So some combination of a machine still breaking in, and belts way too tight seems to be the source of the problems I had. All is good now...
...there are only 10 kinds of people in this world--those who know binary and those who don't...
RE: First Three Prints Crashed
Belts need at least 2 lbf tension (according to the manufacturer Gates); and the motor shafts are rated for 11 lbf at 1/2" axial. Somewhere in between is the sweet spot.