The Oregon Scientific ATC 1000 is light enough to strap to your head, but its fixed-focal length makes the field of view too small at only arm's length. Mounting or hanging the camera above lets you optimize the field of view while also keeping it consistent -- no sudden pans when someone walks over and asks what you're up to.
Here, I attached some mounting points to the camera, hung it 45 inches above a workbench, and took a video of tying a sheetbend.
Compare the video in this Instructable with video from our helmet cam including How to build a sling and 1D accelerometer or the bike cam to see what works for you.
Step 1: Decide Where You Want the Camera
Step 2: Drill Shallow Holes in the Camera
Step 3: Screw in Wood Screws
Step 4: Epoxy Around the Screws
Step 5: Tie Some String to the Ceiling and Hang the Camera
Step 6: Document Away!
The ATC needs a lot of light, otherwise the pictures turn our grainy. We've got pretty nice skylights in the shop, but more light certainly wouldn't hurt.
Since the ATC is only 15 fps you might want to slow down any operations that you do quickly, but you want to make sure are clear. In the video, I tied the sheetbend about half as fast as I normally would.
Awesome pictures on this step by Tim. The original video straight off of the ATC 1000 is included so you can check out the quality.