You're supposed to drill a small hole at the end of the crack so it doesn't form again. And that missing piece, a couple of spot welds using a thicker metal to mach the casing and then epoxy it would work better
well done, looks great. it appears you sealed up the dust port however, could be cut in again. It would eject most dust out the back instead of blowing a cloud of dust around the blade
@@nikhargyanath795 well its a test for the insulation quality, so maybe... Its a insulation tester, a rather old one. Modern one's look like a multimeter/ are a multi meter.