Guru
Joined: 09/08/2007
Location: AustraliaPosts: 4406
| Posted: 10:08pm 14 Mar 2021 |
The rectangular wire will be absolutely brutal to wind.
The smallest size is I believe 3mm x 3mm and the largest I have ever seen is 4mm x 25mm.
Normally it is supplied on a very large diameter drum, and wound straight onto a very large diameter transformer bobbin with a POWERFUL machine.
Try buying some aluminium from Bunnings, rectangular aluminium bar of similar dimensions.
Try wrapping that around a toroidal core, and see how that goes !!!
You will quickly realize that solid copper bar its just not practical for a toroid in the larger sizes.
Even round wire anything slightly over 2mm diameter starts to become a real challenge.
The very fine stranded single insulated automotive/marine battery/starter cable is by far the easiest to work with. Welding cable is the same stuff, but it is double insulated and uses up more precious space through our rapidly shrinking hole.
The welding cable is more readily available though, and is usually sold by the metre which can be more convenient.
The outer orange layer can be fairly easily peeled off.