I'm totally new to Blender 2.8 and trying to learn from Youtube videos. It is going well, but I have this problem.

I have some LEDs (imported as STL files) and they look okay when the render is set to Eevee, but they totally disappears when set to Cycles.

In the material I can change between off and "on". If I turn it "on", then it is actually shown in Cycles, but I cannot get the off version to work.

I hope this is a simple beginner mistake somewhere, but I cannot find it!

Kind regards, Claus

Eevee version Cycles version enter image description here

  • 3
    $\begingroup$ Most of this tree is not connected to the output... How do you switch from 'on' to 'off'? By changing materials? $\endgroup$ – Robin Betts Nov 29 '19 at 11:38

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