Hemming and Seaming an Edge on Coil Stock Using a Tapco Brake

March 9, 2023


How to bend two basic shapes on a Tapco brake 

One of the simplest bends to learn when working with coil stock sheet metal is hemming an edge. Going one step further, you can create a seaming connection.

To hem the edge of sheet metal

  • Use the front of the brake as a guide to align the edge of the sheet metal. This will yield a consistent 3/4-inch hem.
  • Fold the brake up as far as the hinge will allow
  • Remove the workpiece and drop it into the hinge pocket, lifting up on the hinge to pull it into the top of the banana-shaped slots, and bend up with the hinge handle. This closes the bend from the previous step.

To form a hem into a seam:

  • Reinsert the workpiece into the brake until out outer edge of the hem is aligned with the outer edge of the brake
  • Bend up as far as you can
  • Repeat the process of lifting the hinge and closing the bend.

Two critical bends that every Tapco brake professional needs to know.


—This video is from Tapco Tools, one of ProTradeCraft's advertisers. Serving professional siding applicators since 1961, Tapco brakes and accessories bring measuring, mobility, decorative designs, and strengthening ribs to fascia, window trims, frieze boards, porch posts, and beams. See all of Tapco's content here.