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Piezoelectric disks for Z contact detect and bed levelling

Posted by leadinglights 
Re: Piezoelectric disks for Z contact detect and bed levelling
September 21, 2024 07:50AM
I have a very modified Creality A10 30x30cm printer. - but the frame/carrige heater/heatbreak is that of an A10
Its hard to find a way to install the piezo on the X-carrige/extruder, the heatbreak is screwed on to the two protruding threaded mounts seen here:



Here is a link with some pictures, just disregard the missing cooling fans. [www.crealityexperts.com]
I think about making a vertical vertical adapter, two screws screwed into the carrige, two into the heatbrake, and the piezo being placed vertically, pinched depending on load.


maybe somebody got better ideas?
Re: Piezoelectric disks for Z contact detect and bed levelling
September 22, 2024 06:35AM
The method you propose sounds good and I would like to hear how it works out.
Since I first came across piezo bed leveling, I have experimented with various methods of utilizing a piezo sensor attached to the hotend. So far, I have not come across a method that I am completely satisfied with. I have tested mountings similar to those used on the PZ Probe, but have consistently encountered issues with artifacts from filament extrusion pressure and unexpected "popcorn" noises from the hotend.
Currently, I am employing a single underbed sensor to measure the Z-offset and detect any debris on the nozzle. As for the bed mesh, I am utilizing a piezo touch sensor, but I am also investigating the use of an acoustic range finder for conducting a fast multipoint bed scan.
Mike
Re: Piezoelectric disks for Z contact detect and bed levelling
September 23, 2024 04:49AM
Right now I decided to try to add four piezos under the printbed, og the steel-plate where the lower part of the adjusting springs are. Awaiting piezos in the mail.
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