The Metal Melter

I’ve just modified this Microwave Oven Transformer into a dangerous little device. 800 amps of electrical current is about to be bad news for anything made of metal. Today I’m in the mood to melt some metal. This Microwave Oven Transformer used to be a dangerously high-voltage device, but I modified it so the voltage […]

How to Make a Shunt Current Sense Resistor

Hi, I want to make a *beep* I said shunt! I want to make a *shunt* current sense resistor. Basically the way we measure current is by converting it into voltage passing it through a known resistor which we call a shunt and so the current is the measured voltage divided by the known resistance. […]

How to Make The Metal Melter

In a previous video I used a modified Microwave Oven Transformer as an electrical metal melter. In this video you’ll learn step by step how it was made, and what I’m using it for now. In a previous project, I found an old microwave in a dumpster and hacked it open to see what components […]

Make a Spot Welder for Cheap!!

A typical resistance spot welder like this can range in price from around $200 to over $800! That’s a little out of my price range, so for this project let’s make this one from common materials, and for just a few bucks! This modified transformer is the heart of the Spot Welder, and you might […]