Carcinoembryonic Antigen (CEA). Guide. The carcinoembryonic antigen (CEA) test measures the amount of this protein that may appear in the blood of some people who have certain kinds of cancers, especially cancer of the large intestine (colon and rectal cancer).arcinoembryonic Antigen (CEA). Guide. The carcinoembryonic antigen (CEA) test measures the amount of this protein that may appear in the blood of some people who have certain kinds of cancers, especially cancer of the large intestine (colon and rectal cancer).
Instructions. Measure the top of the chimney and the length, width and height of the flue. Build the bottom of the mold out of Â¾-inch plywood. Take the measurements of the top of the chimney and add 2 inches so the cap will overhang the chimney by 2 inches on all sides.Cut the plywood to that measurement by using a table saw or circular saw. Create the cutout for the flue.ake the measurements of the top of the chimney and add 2 inches so the cap will overhang the chimney by 2 inches on all sides. Cut the plywood to that measurement by using a table saw or circular saw. Create the cutout for the flue.
(243.74 kB) The most common symptoms of a failed chimney cap-spalling, cracking, and efflorescence-sometimes go unnoticed until the damage is extensive. THE RIGHT MATERIALS Of the errors made in cap construction, chimney repair people rank use of improper materials among the worst. According to the Brick Institute of America (BIA), chimney caps should be precast concrete, either factory-made or cast onsite on the ground.