Welders (videos)

Homemade welders come in a variety of forms, but are often of one arc type or another. Microwave oven transformers are frequently used as a power source. The sheer quantity of examples available for building research online is nearly limitless, but here are a few for inspiration and to get you started in the right direction:

Homemade Stick Welder - From Microwave Parts! by Grant Thompson - "The King of Random"
https://www.youtube.com/watch?v=nTDx3sN2dhU

Homemade Tig Welder by weldingtipsandtricks
https://www.youtube.com/watch?v=9lV4tzg4zn0

Homemade Arc Welder 120v AC by kurtscottage
https://www.youtube.com/watch?v=82EBHHuJ2K0

homemade battery tab spot welder by hsurfah
https://www.youtube.com/watch?v=9spgDiU3_nw

homemade spot welder by teslacoolguy
https://www.youtube.com/watch?v=Wp7JF2sANsw

My Homemade Welder by junkman6261
https://www.youtube.com/watch?v=_QXHM5ipuCI