In this video I'm showing you how I go about welding a differential making sure not to cause any damage to the crown wheel, pinion and bearings . I'm using mild steel mig which is not the best option for welding dissimilar metals but its gonna get the job done!
Weld spatter in the gears and bearings will cause your diff to start whining and grinding shortly after welding it solid. Here's a few tricks to stop that happening to you.

My names Matt Urch and I own and run Urchfab welding and fabrication.
I specialise in custom automotive fabrication from building roll cages to complete one off builds.
I built the worlds most unique and oldest drift car known as the drift rod which can be found on my channel.
So if your into grinding, welding, fabricating, drifting, going fast etc, your in the right place!