| Subject: | Re: Trying to drill out bolt ... |
| From: | David Beierl |
| Date: | Sun, 20 May 2018 16:58:18 -0400 |
Everything Alistair said, to the max. Low rpm, high pressure. Bacon fat is excellent on steel. So is Tap Magic. So is any sulphurated cutting oil (but it stinks). Yrs, d
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