How To Bend Sheet Metal For Ductwork

V notches are the bending notches on straight duct on slip drive.

How to bend sheet metal for ductwork.

To form the operator marks the bend line on the sheet as a guide then lines it up with punch tip and performs a shallow bend. Peel off part of the backing. Simple sheet metal bender using a hand roller clamps and plywood. To remove irregularity or improve uneven bends place a hardwood piece lengthwise along the bend and hit the bend with increased strength using a heavy duty hammer or mallet.

In some cases as with thicker sheet of metal you may need to use a sheet metal brake to apply your bend. Slide the backing up and over the pipe. A second bend is made across this initial one leaving an x impression on the sheet. If the ducts are going to be concealed all seams need to be taped or caulked.

Cut a piece of foil tape to length. How do you bend a flat sheet of metal into a rectangle or l section if there is a profile rollformed on the two vertical edges of the blank as it approaches the braking station. Here s bob s trick for taping a seam on a pipe that s installed close to the subfloor.