How to use the microwave transformer homemade a spot welder

Two transformers were sandwiched with a small sandwheel machine to polish the weld and gently knocked open the core with the interceptor, to get two E-type, two I-type stacked core, this time only to take the two E-type stacked core on the line, the primary with a diameter of 1.25 haumi around 275 circles (cost me 65 ocean heartache ah, the other all with the old), the secondary with a diameter of 2 haumi double wire and 75 circles around the weld, the welding handle, the electric clamps, shells, all homemade, the weld handle! line with color TV demagnetization line, welding 2.5 welding rod current is a little small 45A to 50A welding point small things are still good after a few trials feel the current can only weld small East East, up to even weld 2.5 welding rod two primary temperature rise fast, such as the future and suitable iron core and then do a slightly larger primary to change the diameter of the 1.5MM, secondary welding current up to 2.5 welding rod 70A can be, there is also I do not want to peer imitation of this small thing because the microwave oven core space is too small it is difficult to get off the line, the size is very precise.