Artistic Sheet Metal Forming By Hammering

Custom made english wheel and planishing hammer.

Artistic sheet metal forming by hammering.

Sheet metal forming processes are those in which force is applied to a piece of sheet metal to modify its geometry rather than remove any material. I cut off the lower portion of the cylinders and unrolled them. Proceed to the next row of marks and continue hammering. Use the drawn lines to guide your hammering.

So on my way home from britishv8 2009 i stopped by weldone for a second visit and james kindly gave me a quick lesson in metal shaping. The lack of suppliers in this specialty type of work and customer demand has forced us to ramp up operations to accomodate the desire to have a one stop shop to get a new chassis and tin work under one roof. Transforming a single sheet of metal into an undulating organic form using only a hammer and stake is the art of anticlastic raising. Hammer across the sheet in one direction.

I rolled them back up by hand and reattached them. The slip roll forms even curves in sheet metal little by little through multiple passes. Strive for even depth and even positioning of the strikes. This leaves the metal full of hammer marks and one typical book of this kind then leaves readers dangling by saying when hammering has been completed smooth up and polish the metal it didn t take long to realize that he s a master of the art of hand forming sheet aluminum into things ranging from parts for antique automobiles and modern racing car bodies to airplane cowlings fairings and wheel pants.

James has built whole cars from scratch. Tin smithing fun creating vintage style ornaments. Hammerforming and planishing are two of the most important and fundamental techniques of custom sheet metal fabrication. Mark both a vertical and a horizontal line through the centers of the sheet.

The last several years have led to developing designs techniques patterns and functional sheet metal parts for pulling tractors. The applied force stresses the metal beyond its yield strength causing the material to plastically deform but not to fail. Proceed across creating an even row of marks. The tokyo based goldsmith yutaka nagai demonstrates how to hammer down a gold ingot to form a sheet.

The art of shaping sheet metal has fascinated many people including me. When the hammer hits the piece of sheet metal resting on the stake the metal rises into curves or coils its edges stretching more than its center. The hammered metal will work harden while the unhammered metal will remain annealed.