Candle wax/parrafin works, but the bolt needs to be red hot first. Push the candle or block of sealing wax firmly against the hot bolt or nut. Have the fire extinguisher handy- - - -the flames are impressive when the parrafin fumes ignite.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!