Would this stator produce a strong North and south pole and can it be tested with a piece of steel once energised?

thank you sir.

Its 'wire sheath' , it's just left over the wire and not shrunk around it . Material : nylon or fiberglass. It's used to protect the copper wire from the vibration [it receives from the plastic (edges)],and from UV (sparking at the armature carbon brushes contact. This kind of reinforcement is used mostly in $30 and above angle grinders.

pls idol

He showed how at 2m08s to 2m15s (but didn't actually do it). i.e. After cutting out the burnt coils you count the strands manually. The number of turns plus the wire thickness as measured on the wire gauge tool is how you make new coils the same turns/power as the old ones. (And one or two turns counted too many or too few isn't going to make much difference.) Then later when winding the new coil, you turn the handle the same number of times as you counted. What he didn't show but should have, is how he sized the block of wood he wound the new wire around, so the new coils were the same size as the originals. He probably just measured the height of the transformer for the vertical length, then the width where the coils poke out to 'turn' at one end. But he still should have shown it.

@@realfamilyman i have a question, it seems it does not matter that the wires are perfectly aligned like they are in a transformer?

@@robbirobson7330 If you mean how he lets the wire fall randomly wherever it likes, rather than carefully winding each turn nice and neat... then any final difference in output would be negligible (as long as the coils are all wound in the same direction which they obviously are). i.e. The magnetic field cuts across each coil of wire, individually, but all at the same time. Thus it's like having a long length of coiled copper tubing, with a water inlet tapped into the start of each new turn of the coil, then turning a water tap on and off quickly in pulses - which effectively "pushes" any voltage/current made through each coil, all in the same direction, all in the same instant of time. So if for example the repair was for a ceiling fan, and he wound each coil carefully and neatly like a computerised machine would do, he might get a slightly faster top speed out of each speed setting. Or if it was for a wind generator, he might get a slightly higher voltage/current output. So unless you're rewinding some kind of industrial machinery with thick wire and creating hundreds of amps... then painstakingly winding each coil neatly wouldn't be worth the tiny amount of speed/power gain.

@@realfamilyman thanks for the answer, i tried to rewire a transformer once and it was very difficult by hand and in the end i did not get the same output thats why i asked and now i also want to make my own wind turbine and i also need to repair a small angle grinder which coils has burned

@@realfamilyman thats my question sir how he can arrive the size of wooden bobbin that make him used to make a stator coil sir

Iron mixed with silicon to increase relative permeability. Otherwise pure iron sheets may heat up when being magnetized by alternating current leading to more power loss due to iron. You can say it as silicon steel.

@@Dave_en Can we apply isulating varnish to iron sheet.

@@thesneh6873 yes, but it should be silicon steel for this purpose. Not ordinary steel.

@@Dave_en Ok so you tell me whete I can find these silicon steel

@@thesneh6873 from electric motor spare parts store. You can ask for "stampings" or stator. You have to specify the purpose so that they can help you finding the suitable material. For mixer grinder, exhaust fan, ceiling fan, transformer etc. We have a huge market for electrical goods in New Delhi. You can find similar place at your location.

For powertools lang ako sir.