The spanner smashes into the aluminium sheet which is being pushed away by a huge magnetic pulse.
“Continue reading” for more details and photos.
This example of magneforming uses pulses in a flat coil similar to can crushing. You can force the aluminium sheet upwards to slam into another object to create an impression. If the other object is magnetic, it will be attracted to the coil which is the opposite direction the aluminium sheet is going, giving greater impact.
This is the result of a 4 kJ shot with a mini wrench above the aluminium, which leaves a sharp impression except in the centre where the work coil does not cover. The level of detail can be seen in the reversed “China” label.
The rewound work coil has 7 1/2 turns with much less dead space in the centre. Next to it is the 50 cent coin covered by a large magnetic washer to provide down force against the up force of the aluminium.
The neat arrangement to hold the components together.
The latest magneforming coin shot at 2 kJ. An Australian 50 cent coin is neatly cut off and imprinted in reverse.
And now for some body part magneforming.
The left photo above shows the set-up with a larger flat coil made of Litz wire from a kitchen bench top induction cooker. The middle photo shows the set-up with an insulating sheet then some copper foil then my hand. The right photo shows the result at 1.75 kJ (4 kV). The foil at this stage is starting to tear. It also is becoming hot enough to discolour with oxidation which can be seen on the full size photo. To counter this I had been wetting my hand and the areas of good contact did not heat to the point of oxidation, nevertheless, it was hot and I had very superficial epidermal scorching on a couple of fingers which was just visible. Nothing to see now in the cause of science though but this is probably the limit unless there is a thermal barrier such as a glove.
The pulse sensation is like a soft slap. It is only foil after all.
Please note that this is an experiment that I graded up from very low energy levels to sort out what happens to keep safe. I am, at the moment, typing comfortably with both hands….
Related pages
Try something else
External links
Magneforming Wiki
Magneforming Google+ post: Mar 24, 2012
Magneforming 4HV post Jun 24, 2006
Photo Date: 2006