I don’t believe that the 2mm range will see thru the glass either anyhow… but its worth a try i suppose.
First - You can test the sensor out by taking a meter to the output and 24VDC+ on the module
test with target and without target. one should show voltage the other won’t.
I cannot recall if the prox sensor is supposed to be normally open or normally closed, i know the filament switch is normally closed. a relay can be used to adjust that if it ends up needing to be. however, the NPN is the right type of output at least.
also wiring should be Brown 24vdc, black signal, blue gnd
If you can confirm you are getting a signal that switches effectively thats a step in the right direction.
I don’t believe that the 2mm range will see thru the glass either anyhow… but its worth a try i suppose
There is a item you can print created by a member who has passed away called FiFix that is an adaptor to add to your 3dp module which gives a target for printing on glass. There is a whole big thread dedicated to it, which you should read, but here is a link for the file. RIP Stefix