http://zilvia.net/f/archive-faqs/148126-how-weld-open-differential-approved.htmlI bet that held up GOOOD.
What to do so it doesn't grenade?
Dont worry about using more than 1 can of brake cleaner on the thing. You dont even need to use that. Just wipe the gears with a rag. Good enough.
Take the c-clips off your stub shafts and jam them all the way in.
MELT the spider gears together then run multiple beads connecting the spider gears to the housing and then to eachother AGAIN. Go at it for about 5-10 minutes with a wire brush or a small pick to remove boogers and slag. Use the other half of the can of brake cleaner to get most of the junk out.
There. It's done.
This guy did step 1. That is the WEAKEST shit i've ever seen.