So I’m a fairly new blacksmith, self taught and I built all my own equipment including my propane Venturi forge.Things were going pretty well until I tried my first forge weld and I just cannot get it to stick, and I’ve tried a bunch of times. Here’s my method, hopefully one of you can tell me what I’m doing wrong:
I take 2 squares of 6mm mild steel and clean the faces on the grinder using a 36 grit belt until they’re flat and shiny. I mig weld them together
Throw them in a preheated forge and let them get cherry red then take them out for a quick brush and a sprinkle of sodium tetraborate decahydrate around the edges. Back in the forge until white hot then out again for a few light taps with the hammer, more borax and back in. Out again when white hot for a few more (slightly heavier) taps with the hammer then left to cool.
I’ve attached a picture of the ‘welded’ faces of my last attempt to give a little more info, any advice greatly appreciated. Thanks