How To Twist Thin Sheet Metal Into An Auger Shape

It will help keep the bit on track until it starts to cut the hole.

How to twist thin sheet metal into an auger shape. A small hard nail will work in a pinch. You won t know the exact shape to cut without some trial and error and it would depend on the forming process as well. Mark your bend lines. All you need is a small dimple that the tip of the drill bit can rest in.

I think an auger screw is going to fall into the second category. Other shapes such as a sphere will require actually stretching or compressing the plate in areas to form the shape. To prevent this make a small depression in the metal at your drilling mark using a pointed punch center punch and a hammer. The average hack requires at least one angled metal part and the best tool to make one is still the good ol press brake.

Simple sheet metal bender using a hand roller clamps and plywood. Stretch forming is performed on a stretch press in which a piece of sheet metal is securely gripped along its edges by gripping jaws. 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. Then use your bend allowance to draw your second bend line the intervening distance between your bend lines bend radius.

Monkeys spinning monkeys by kevin macleod. 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.