The original ones are made of plastic. The holes get elongated over time, the material gets heavily scratched from dust/debris accumulating and moving back and forth which blocks the light. The design was not very robust, but then again they weren't designed to last for 40 years!
@@earlywilliamselectronics-a4799 I didn't know that the originals were made out of plastic. I didn't know that the accumulated Dust Debris also will BLOCK the light. The brand new interrupters are made out of what material?
What types of problems are common with Optical Interrupters?
The original ones are made of plastic. The holes get elongated over time, the material gets heavily scratched from dust/debris accumulating and moving back and forth which blocks the light. The design was not very robust, but then again they weren't designed to last for 40 years!
@@earlywilliamselectronics-a4799 I didn't know that the originals were made out of plastic. I didn't know that the accumulated Dust Debris also will BLOCK the light. The brand new interrupters are made out of what material?