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Axis moving ultra fast with hot bed firmware

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In Cura I switched my machine's settings to include a heated bed and set the temperature to 0. This was in order to benefit of the 3 point bed levelling system.

After this part i had to reflash the firmware in the machine and my UM Original started going freaking faster for homing operations, but also for printing.

Why is this happening only when the heated bed firmware is uploaded?

Should the machine not behave just the same as it was before?

I reflashed back as the quality of the prints decreased dramatically with this firmware.


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I've also noticed that after uploading a custom firmware, the printer would seem to run faster than before. I thought I was just going crazy, but it might actually be some error..

I've never had any quality issues though. It's just that I now it feels like 50mm/s is the same as 100mm/s was with the old firmware.


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Daid, are the accel settings different because of that Z motor change?

Also, if you remember the thread about the quality difference with 14.06 version vs previous versions, could they have flashed the heated bed version and be running at a higher speed?

That was the discussion where you did a double blind test and posted a dimly lit photo of the result.


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