Time for a new Warpinverter build

Author	Message
Murphy's friend Guru Joined: 04/10/2019 Location: Australia Posts: 678	Posted: 12:50pm 14 Mar 2021         rogerdw said   Square or rectangular wire sounds awesome, but I hate to think how much it would cost or where to even find some. I did follow your comments and photos to twist some wire to make a secondary winding for a spot welder  ...  but of course in my usual fashion of overkill I used 20 x 1.7mm wires. It was only 2 metres long, but I'll never do that again.   Having said that, with the correct size and shape spacers I reckon I could twist it ok  ...  but needs a bit more thought put into it first  ...  and maybe an adult helper too. Re rectangular wire source, I went to a motor winder to ask if they had leftovers. He mentioned that just down the road was a place that *made* this wire. They make only to order and the minimum was 20kg. But (having pity on me) they said they always make more than ordered and if I was not fussy about size they'll look if some leftover was around as it only got sold for scrap value. I said I'd happily pay a little more than the scrap value and so obtained my rectangular wire, I think it was about 10kg brand new wire I got for scrap price . re your 20 strand twisted wire experiment, I tried something similar but fewer strands and quickly saw that holed disk idea was a waste of time if one wants a neat result. I know, somebody here did a many strand primary but it definitely was not neat. Do do it neat, wind 6 strands around a straight (kept straight) single strand and you end up with 7 stand wire. Do another two of these and then wind the 3 x7 into 1 x 21 wire. If you are happen to be in Perth WA you are welcome to have my 7 strand winding disk, spools & all but, of course, no wire on them