Screw winding idea

[aleks]

OK, this is funny of course, but is cheap and precise.

You should use double helix construction screws. A longer ones are preferred than the ones shown on the image.

Longer screws can be screwed into a metallic base (the screw shown is a metal corrosionless self-cutting screw capable of penetrating metal). The head of the screw should touch another base (screw can be screwed through it first). Bases thus should work as "+" and "-".

The wire is taken from a standard UTP5 (twisted pair) cable. It is 200MHz insulated copper wire capable of carrying at least 200W load I think.

You may run pulses on both coils or use one coil for constant DC current and the other for pulsing.

The construction (even with dozens of such screws) is dirty cheap.

(you may read my other postings from my profile to get the idea of what I'm talking about)

[aleks]

Here are step-by-step assembly I'm trying. This one depicts wooden bricks used as a frame.

[aleks]

Assembled frame.

[aleks]

This picture shows screws in the frame. Well, since I've used hand screwdriver and drill, the screws are not that much parallel in this assembly - but that's not that important anyway. Note the aluminum foil used as "+" and "-" contacts (well, there is a lot of resistance between the contacts exist).

[aleks]

Double helix winding on each screw - takes a lot of time if you ask me. Last 3 screw windings are not finished. In a finished "scheme" there are 24 coils available.