CNC Metal Forming

A large silver cone attached to a black hemisphere floats over a piece of sheet metal held in a metal frame. The metal has what appears to be machine grease on it to aid in the forming process.

Forming complex shapes in metal sheets is still a laborious process, especially if you aren’t needing more than a couple parts so stamping doesn’t make sense. That may change with Digital Sheet Forming.

While this video is basically an ad for one vendor’s approach, it gives a good set of examples of what the technique can achieve. The high pressure mechanism of the machine presses the metal layer by layer down against a silicone backing to form what you’ve designed, in this case, the nose cone for a Tucker Carioca.

Some people will decry it killing the metal forming industry, but as [Rob Ida] says in the video, it will allow metal formers to become more efficient at the work they do by taking out the tedium and letting them focus on the parts of the process requiring the most skill. Anyone who’s done any work with a 3D printer or CNC mill will know that sending a file to a machine is only one small part of the process.

We’re anxious to see this technology make its way to the makerspace and home shop. If you want to do some sheet metal forming now, why not try hydroforming?

8 thoughts on “CNC Metal Forming

  1. If this metal-forming impresses you, the two-robot pinch-style metal-forming will blow you away. In that technique, two separate industrial robots apply coordinated pressure on either side of a sheet to do the deforming. The SmarterEveryday YouTube channel did an episode on it (search for ROBOFORMING).

    1. Those guys are on another level. I imagine they’re aiming for doing the bodywork for advanced military aircraft. Watching how well they could shape titanium polymers was the most impressive thing I’ve seen in years.

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