![]() To cut a hole in the center of the piezo disc through which the filament within a PTFE guide tube (or Bowden tube) passes. ![]() The upper part has a recess to center the piezo disc. Between the clamp which has a narrow flange on the top and the upper part (which can be integrated into an effector or carriage) is a piezo transducer, element or disc designed to be a buzzer, these are very low cost $0.50 approximately. The printed parts required for this version and links to several other versions, plus practical assembly instructions are available here: īasic schematic of Piezo Hotend Z-probeA hot end clamp securely holds the hotend. ![]() Practically this works the same as the hotend probe but requires greater complexity in mounting the bed so that it is stable and the piezo discs are sensitive to the heat of a heated bed. In this system 3 piezo discs are used with specially designed mounts below 3 fixing points on which the printbed is suspended. This system is the forerunner of the piezo hotend probe. Whilst this eliminates the issues with mounting the bed, getting a firm nozzle and still having enough compliance to trigger the sensor is the challenge.
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