The only real flaw (IMO) of the CNCRP system bit us this weekend as I came in on Monday to a non-functioning CNC due to a broken proximity sensor that I'm sure one of my employees broke but just like with kids, no one did it. I had been meaning to design a guard but never got around to it but I guess I need to do that now. I contacted CNCRP about a guard but while I got an email response, I didn't get any answer about a guard so I guess they don't have one. CNCRP really should have come up with a proximity sensor guard by now as this is a major weakness in an otherwise solid kit system. So what guards have you built to protect the (fragile) sensors? Any ideas, especially with pictures would be greatly appreciated. Thanks.