I am scratch building a large format printer and am at the point of selecting the home switches. It seems like the solid state Optical type would be more repeatable. Has anyone verified this?
Expensive, but much higher quality than the zippy ones you find at RadioShack. They're also sealed ... more important for my mill, but nice nonetheless.
I'm using these, they have been working just fine despite being the cheapest I could find. Getting the Z just right has been fidgety, I'm not sure if that is from the end stop switch or the fidgety set-screw actuator.