I'm just about to embark on the replacement of the keel bolts on my Holman 26 (when I'm allowed out again) . They are so corroded that the best option appears to be to cut through them at the join between the wooden hull and the cast iron ballast keel. I think the original bolts were mild steel. I've been advised that I need a diamond wire cutter. Any suggestions as to where I could get such a tool suitable for the job?