This machine is meant to come apart easily. But that crunching sound is probably normal - those are the ball bearings in the 2 vertical linear bearings for those 2 8mm rods.
Did you actually see it fall? This is actually common but also common is underextrusion for a layer or 3 due to a tangle.
Anyway you are probably right. It's usually related to some recent boards that are more susceptible to overheating I think maybe due to too much current to the Z axis. There are 2 solutions out on the forums - sometimes you have to do both solutions. One solution is to remove the bottom cover and tilt the machine a bit and put a fan - like a window fan - blowing on the circuit board. You can print sideways or even upside-down - it doesn't affect the print.
The other fix is to lower the Z current with a gcode - add it into your existing gcode file - it only changes current temprarily until you power cycle (or maybe the next print? I think power cycle):
M907 Z1000
sets to 1000ma max - I think the default might be 1300ma.
Yes, I have managed to remove the cover and check for anything causing the table to catch and yes I did see the table drop.
I'm not sure that it's a board issue and more a mechanical issue. Particularly as it tends to happen at the same level each time.
I've manually slid the table up and down and it did feel like it's catching but after doing this repeatedly, It's seemed to free up and the last test print had a perfect continuous external surface finish with no faults. It just concerns me that I have found a particular reason. I believe it's been a problem ever since we received the machine new.
I'll see how the next print goes.
I feel that
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gr5 2,224
This machine is meant to come apart easily. But that crunching sound is probably normal - those are the ball bearings in the 2 vertical linear bearings for those 2 8mm rods.
Did you actually see it fall? This is actually common but also common is underextrusion for a layer or 3 due to a tangle.
Anyway you are probably right. It's usually related to some recent boards that are more susceptible to overheating I think maybe due to too much current to the Z axis. There are 2 solutions out on the forums - sometimes you have to do both solutions. One solution is to remove the bottom cover and tilt the machine a bit and put a fan - like a window fan - blowing on the circuit board. You can print sideways or even upside-down - it doesn't affect the print.
The other fix is to lower the Z current with a gcode - add it into your existing gcode file - it only changes current temprarily until you power cycle (or maybe the next print? I think power cycle):
M907 Z1000
sets to 1000ma max - I think the default might be 1300ma.
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