Now folks. Is there anyone who knows of a aluminium armature bar on the market as i cant find any.
I know aluminium isnt magnetic but me and a friend have designed one that will, and should work,(fingers crossed).
My friend who is actually building it is a wizard at engineering so we can pull this backyard project off.
We dont claim to be machine builders and its just a little experiment.
We will stick photos up when ones done but if its been done before then please let us know so we can forget the idea completly.

Cheers folks...