Re: seized, broken bolt Boston
Drill out almost completely, then using a pick/scribe peel the bolt remains from the corro-thread area, is my fallback plan. Sharp aim of the center and luck might work out. The stainless seems extra tough, will not readily collapse, and the corrosion itself seems very hard. Acid is a mystery to me and seems far-fetched. Machine work might be too costly. I might drill, grind and pick at the remains.