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BL Touch Premature Retraction!

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Joined: 2 years ago
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Good day all, 


Hoping someone out there can help me with a little problem I have been experiencing.    

I popped a Creatlity BL Touch onto the Ender 3 a while back (Right round March timeframe) Since then when the BL touch probes the bed prior to printing.  About 1 out of 6 or so probes it has a point where the pin is retracted prior to impacting the bed. 


This of course results in the printer thinking the bed looks something akin to Mt Everest.   If it were consistent of course it would be something easy to troubleshoot.  But where it is very sporadic it is a real bugger to track down. 


SOMETIMES it actually errors out and gives me

<Recv: Error:STOP called because of BLTouch error - restart with M999
Changing monitoring state from "Printing" to "Cancelling"
Send: N18 M108*19
Recv: Error:Printer stopped due to errors. Fix the error and use M999 to restart. (Temperature is reset. Set it after restarting)
Send: N19 M108*18

Recv: echo processing [...] Recv: Error:Probing failed Send: N20 M108*24>

I am running the suggested code from Creality Marlin Bugfix 1.1.x


Any thoughts are welcome. 


Thank you

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