Printer misaligned each layer z

Can anyone explain to me why is misaligning each layer?
Watch and see what happens

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To me it looks like your X and/or Y is missing steps. Are the drivers turned up high enough? are they cool? are your belts reasonably tight? Are your pulleys slipping on the stepper shafts?

Just a few things to double check.

Sliding pulleys, Ok!
Belts fastened, OK!
  The drivers are turned up high enough? not understand!!

Edited 1 time(s). Last edit at 07/31/2013 09:26AM by adilerson.

your travel speed is set too high!! this is the jog speed when not printing anything. I set my travel speed at 100mm/s max, some printers it is set at 70mm/s.

with all the acceleration nonsense people think there printers are doing this real fast mm a second moves, but in reality the software runs so slow it is running a lot slower than that, until a jog move happens. there is so little data processed in a jog move that it runs at near the speed gcode tells it.

adilerson Wrote:
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> Sliding pulleys, Ok!
> Belts fastened, OK!
>   The drivers are turned up high enough? not
> understand!!


The driver boards that power your motors have little potentiometers on them that you can turn with a screwdriver (very carefully). The pots control the current being fed to the motor. More current = more power, more noise, and more heat. You want to make sure your motors have enough power for the speed you're telling them to run at, subject to the constraints of noise and heat. Too noisy and you'll want to pitch the thing out the window; too hot and the motors may overheat and skip steps anyway! Also, PLA motor brackets may soften at extremely high heat.

So it's a bit of a balancing act. You want enough current for the motors to accomplish the tasks you've giving them, but not too much because that can lead to other problems.