Quote Originally Posted by BobTSkutter View Post
The proximity sensor at the top of the Z-Axis appears to be very close to the grease nipple on the bearing block. Could the grease nipple cause interference with the sensor?
Adjustable bolts looks like a clever way to adjust the trigger point but are the bolt heads big enough for the gantry limit switches to "see". The sensor is round and I think you've set screws which appear to be the same size as the sensor with the hex indent in the middle. It looks to me as though the hex indent is exactly where you want the sensor to trigger. Would using a conventional hex head bolt instead of a set screw be better?
Regards
bob
Good catch, but this is just a 3D error that I didn't correct yet. I plan to have all grease nipples facing inwards and with a common lubricating hose and nipple externally mounted.

As for the screw heads, I am not sure really. This is something that I can easily fix later if it turns out it is not working as planned. I have access to both lathe and mill so manufacturing a better target, e.g. with a flat surface for the sensor will be possible.