My safety tip:
Everyone should have one of these near their Maslow, $20 at the local hardware store:
My dumb mistakes:
One time, while trying to troubleshoot ongoing z-axis issues, I told GC to move the z-axis up 3 mm (or, so I thought). Sometimes I have the GC computer close by for convenience while homing or zeroing the machine, but this time it was about 4 ft away. I walked over to the router to watch what it was doing. Stupidly, I just kept staring, wondering what was wrong, as the router rose ever higher and the bearing on top of the clip hit the router housing. Then I became alarmed (about time, idiot), ran over to the computer, fumbled around on the trackpad, and finally clicked “stop”. The motor was so strong, it actually damaged the router housing so badly that I had to get a new one. Afterwards, I realized that I had actually input a 3 inch move, not a 3 mm one.
Another dumb mistake: The router kept slipping out of the clip. Then, one time it performed flawlessly. After the cut program was finished, I realized that the bearing on top of the clip had broken free. What I figured out was that the bearing I was using to keep the clip perpendicular to the router was not perfectly centered. The screw would sometimes hook the bearing and that would cause the router to pop out of the clip. When it finally broke free, it stopped causing the problem. I took the bearing off, and never did try to put it back on.
My $0.02 for new Maslow builds: Putting a bungie or a big rubber band over the top of the router should be a regular part of the build, not an optional step. If z-axis movement/accuracy is still an issue, then put a thin washer between the z-axis screw and the router housing. And, if that still doesn’t resolve your problems, put a bearing on the clip, BUT be absolutely sure it is accurately centered, and be extra careful when moving the z-axis with GC.