Qidi Plus 4 Piezo sensor covers

Some folks feel that the piezoelectric sensors that help with initiating bed leveling in the four corners may be heat sensitive. I noticed that the original bed level sensors are protected by a thin insulating foam tap. so I designed this model so that the foam tape is removed and a printed cover that allows the piezo sensor to breathe is in its place.

To install I recommend keeping a small piece of foam on the actual sensor itself… i'm not sure if this matters, but it's how bambu has their sensors so i figured “why not?”

• You will need to remove the bed leveling nut and the three screws holding in the piezo sensor, 
  • the spring will fall, so don't lose it, 
• the spring goes back in first, then the piezo sensor, 
• the wires for the sensor need to be routed around the screw holes through a cutout at the bottom of the model.
• If you find that the glue that is holding the two metal plates as loosened and is coming off I recommend using comstar metal lock 

For additional protection on the piezo's you can also unscrew all the pcbs that they route to, place in a nylon washer as a standoff and reinstall with m3 nylon screws. I happened to use these, and used the nylon nut as a standoff the actually standoff is too tall, so don't use those. This keeps the PCB's from touching any metal. 

Anyways, I don't think this is the issue with the Qidi bed leveling at high bed and chamber temps, I believe it is the PCB that the induction sensor plugs into, I believe the high temperatures are causing issues with that PCB, others think it's the induction sensor itself. but I definitely don't think the issue is with the piezo sensors.