
Originally Posted by
Rodsmachineshop
1. Heat the nut up, but not red hot or you can distort it and wreck the threads, this will not happen on most bolts but if it does you will be forced to cut it off.
2. Place a candle on the end to melt the wax. The "wick effect" will suck the melted wax into the threads and lube it up enough to remove easily.
This sounds a little wierd but trust me it does work.
Think the guy who welded the nut doesn't like broken off bolts ??? .... 
That wax trick is slick as slick can be. Never heard of it until now ....
Is it OK to want to break something just so that you can weld it back together?
Everlast PowerTIG 185 Micro IGBT AC/DC Welder