Ir module not triggering on painted pei
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Hi
When I put my hand flat on the bed, triggers correctly and reliably. However when using my heated bed with pei (sprayed with high temp matt black paint) it's triggering unliably. The reason I say this is I have been playing with the mesh bed compensation and in some spots, it doesn't trigger. But sometimes I was able to complete the entire program.
I have given it a fresh coat of high temperature matt black paint but this hasn't helped. It appears to be tempermental as I did get it to trigger a few times.
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I must say the guide says to paint the pei on the bottom side. I did the top side because I didn't read the instructions properly at the time and it's an preexisting sheet am painting.
Why does it have to be the underside?
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@ageis it has to be the underside because you want the top side to be PEI for your print to adhere to.
The reason for painting it is that PEI is transparent to IR so the sensor sees reflections from both the top and the bottom surfaces, which makes it less accurate. Painting the underside reduces the reflection from the bottom surface.
