How To Twist Thin Sheet Metal Into An Auger Shape

Simple sheet metal bender using a hand roller clamps and plywood.

How to twist thin sheet metal into an auger shape.

Now that you know your bend allowance take your protractor and draw a clear line with your marker across the point at which you will bend your sheet metal. Stretch forming is performed on a stretch press in which a piece of sheet metal is securely gripped along its edges by gripping jaws. Monkeys spinning monkeys by kevin macleod. The average hack requires at least one angled metal part and the best tool to make one is still the good ol press brake.

All you need is a small dimple that the tip of the drill bit can rest in. You won t know the exact shape to cut without some trial and error and it would depend on the forming process as well. Then use your bend allowance to draw your second bend line the intervening distance between your bend lines bend radius. Read on as we show you some basic techniques you can use to reshape and shape your metals from the comfort of your own home with basic metal shaping handtools.

To prevent this make a small depression in the metal at your drilling mark using a pointed punch center punch and a hammer. It will help keep the bit on track until it starts to cut the hole. Most highly complex shapes that are actually formed out of sheet metal can be created using lofted bends but often the trick to creating the shape lies in what you use for the profiles. A small hard nail will work in a pinch.

The feature is limited to only 2 profiles and no guide curves so look for opportunities to put most of the complexity into the profiles. The gripping jaws are each attached to a carriage that is pulled by pneumatic or hydraulic force to stretch the sheet.