Well crap, crap, and triple crap. I was routing edge splines in a Greene and Greene breadboard top with a slot cutting bit in a PC 690 with a fixed base. Een though I checked and checked to ensure the screw on the base was tight the router slipped down once I started cutting the slot. Fortunately it didn't go through the entire top. I need to patch the slot an try again.
Do the older style fixed base with a thumb screw have a tendency to work lose and slip once routing starts? I had tightened it down as much as a could without a mechnical aid.
Are the newer fixed bases better?