After reading all the glowing reports here of how wonderful they are, I bought an impact driver - a DeWalt 18V. I took it for a spin (pun intended) this afternoon. Wow, is this thing cool. I was able to easily loosen some #14 Phillips head screws with ease. I replaced the Phillips head with some (McFeeley's) square drive screws. This is where I need a bit of coaching.
I am used to using a simple cordless drill to drive in screws and have come accustomed to the tactile feeling of knowing when a screw is tight - the other cue was when the Phillips head screw totally strips. The impact driver has no such feeling as it ratchets constantly. In my desire to be sure I drove home one of these #14 square drive screws, I broke off the head of the drive I had chucked up in the driver. I am sure I was being over-zealous and probably had the trigger totally depressed when this happened. So what visual, tactile, or audible cue do I use to determine when I have a screw driven home and tight when using an impact driver? Should I merely look for the screw to stop turning?