Seeking advice on how to extract broken lug bolts

Get yourself some Artec Alloys Unichrome 3/32. Reach in and build up the broken bolt with the unichrome ( It will build a nice ball as you come up to the top of the hole) Build it up high enough so you can weld a flat washer on the bolt. Then weld a bolt onto the washer and let cool, Don't get in a hurry, Wiggle bolt back and forth and it should spin out. The heat from welding will expand the bolt so you need it to cool on its own, If you can hold your hand on it, you can try it. You need a steady hand when you are welding on the bolt,but just touch it and burn a litle at a time and it will build you a nice ball to attach the washer to. I've found that Unichrome is the best for removing broken bolts,studs,exhaust studs or bolts. It seems to flex some what so it doesn't snap off.