Step 1: Gather your materials
The two magnets pictured were originally supposed to be a clasp, but that didn't end up working out. Ignore them. Or use them to make LED throwies!
(Not valid in the Boston metropolitan area)
Step 2: Measure your wrist
To do this, I measured a bracelet that I already had.
Step 3: Load the file into the laser
My speed/power settings were:
You may have to edit the DXF to make a size that fits your wrist. This should be self-explanatory, but if it isn't: remove some of the vertical lines, shrink the boxy-bit, and move the circle that was at the end of the boxy-bit in the same direction you shrunk it.