MK2s Keeps hitting the bed on calibration  

  RSS
Santos
(@santos)
New Member

Hi,

I have a MK2s and yesterday the printer just started to hit the bed.

I tried to calibrate Z axis, Mesh leveling, calibrate XYZ and run the wizard, but no luck, it always hit the bed.

What else can I do?

Thank you.

 

Best Answer by Bob Silver:

When this happened to me, I had to recalibrate my PINDA, moving it slightly lower.  My theory is that it isn't detecting the bed before it rams into it, and thus it never detects it, in order to calibrate against it.

You can loosen the PINDA by dropping the lower nut, lifting the PINDA up, and then raising the top nut, reseating the PINDA in its usual spot and then tightening the lower nut.  I think i had to lower mine by a few increments, so don't tighten things till they're where you want them.

...
Posted : 25/01/2021 2:15 pm
Bob Silver
(@bob-silver)
New Member

When this happened to me, I had to recalibrate my PINDA, moving it slightly lower.  My theory is that it isn't detecting the bed before it rams into it, and thus it never detects it, in order to calibrate against it.

You can loosen the PINDA by dropping the lower nut, lifting the PINDA up, and then raising the top nut, reseating the PINDA in its usual spot and then tightening the lower nut.  I think i had to lower mine by a few increments, so don't tighten things till they're where you want them.

Posted : 26/01/2021 6:19 am
Santos
(@santos)
New Member

Hi @bob-silver,

Your solution worked, problem solved. Thank you.

But that leaves me with a question, why did it stop working? If it worked for so long on that position.

Is the P.I.N.D.A. sensor losing it's sensitivity?

 

...
Posted : 26/01/2021 10:26 am
Bob Silver
(@bob-silver)
New Member

@santos

Now there you have me.  There seems to be something else involved, because *after* I had it re-calibrated and it had worked there was one point where it repeated the behaviour.  I have since factory reset and recalibrated a couple of times and it seems to be working great now.

I'm calling it a mystery for now, and seeing how thing progress over time.  Your guess of the probe getting 'near sighted' over time seems as viable as any!

 

Posted : 27/01/2021 1:09 pm
Share:

Please Login or Register