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Post by animoose on Aug 17, 2016 2:51:57 GMT
I have noticed that I get a slight bounce in the bed on a Z movement. It doesn't seem to affect print quality, but it's slightly worrying. I eliminated this by changing the Z max speed all the way down to 400. Reducing the Z acceleration down to 100 or so has the same effect. The default values for these in the config are 4800 and 500. What values are other people using? Has anyone else noticed the bounce?
Where I see the bounce is on the MK3 itself. The carrier stays stable. So the bed is probably bouncing slightly on the springs.
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Post by 3DprintedLife on Aug 17, 2016 23:15:20 GMT
The Z bounce is likely due to flexing in the aluminum plate. This is a known issue and is fixed in V2 with a plate that is 50% thicker, but for the current Eclips3D there is no way to really get rid of it, but it won't affect print quality at all. If people find this to be annoying or worrying like yourself, I'd recommend changing the acceleration and leaving the speed, but additionally then lowering the homing speed for the z axis by about half as it may take longer to stop after triggering the endstop.
The important thing is that during prints this should not affect print quality, except in the case of using a large z-hop and a very small retraction, as this can cause the nozzle to be bouncing slightly as it begins printing. The fix for this would be the same thing, reducing acceleration or using a smaller hop+bigger retraction.
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