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6/18/2025, 4:32:14 PM
>>16683085
Okay anons I need some understanding with light pipes, sometimes in my 3d printing electronic projects I would use clear fishing line or clear stretch cord UV cured glue the end to SMD led and route it to the surface of the housing.
The problem is the light leaking and can be seen through the 3d printed housing. I would normally use black acryli paint, cover the fishing line / stretch cord walls to remove the light leak.
process is I would plug it in so the led can be turned on and I can paint the shit I need to and know if I missed a spot, at first the LED is super bright through the light pipe, but as I am painting it, it fades to the point you can barely see the light.
Why is this? I am painting the walls of the pipe and the ends are covered in glue so even if I paint over the glue the light should still be passing through.
Another 3d printed project ofr a usb cable tester I modified the cover to have each LED its own little "room" that I also covered in black paint didnt glue the fishing line and while I prevent the light bleed, its really bright still.
I thought about trying heat shrink or insulation sleeve from used wires but I hope to get an answer why painting it is dimming the light, even though the ends are not getting covered.
Okay anons I need some understanding with light pipes, sometimes in my 3d printing electronic projects I would use clear fishing line or clear stretch cord UV cured glue the end to SMD led and route it to the surface of the housing.
The problem is the light leaking and can be seen through the 3d printed housing. I would normally use black acryli paint, cover the fishing line / stretch cord walls to remove the light leak.
process is I would plug it in so the led can be turned on and I can paint the shit I need to and know if I missed a spot, at first the LED is super bright through the light pipe, but as I am painting it, it fades to the point you can barely see the light.
Why is this? I am painting the walls of the pipe and the ends are covered in glue so even if I paint over the glue the light should still be passing through.
Another 3d printed project ofr a usb cable tester I modified the cover to have each LED its own little "room" that I also covered in black paint didnt glue the fishing line and while I prevent the light bleed, its really bright still.
I thought about trying heat shrink or insulation sleeve from used wires but I hope to get an answer why painting it is dimming the light, even though the ends are not getting covered.
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