spray wd40 on the bearing before starting. It will help in keeping the glue
from sticking to the bit and bearing. I use blue masking tape along the
edge of the formica for the bearing to ride. Since teak is a dense wood
and may cause overheating of the bit. Make sure you use a variable speed
router atleast at the 1/2 inch arbor size. My best advice would be to mill
a small rabbet along the edge of the formica to allow the formica to set in
and fit the formica to the cutout
Terry