To: | towertalk@contesting.com |
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Subject: | [TowerTalk] drilling chrome-moly mast |
From: | Warren Munro <wmunro1@hawaii.rr.com> |
Date: | Tue, 28 Aug 2018 15:29:03 -0400 |
List-post: | <mailto:towertalk@contesting.com> |
All: This may have been mentioned before, but my machinist brother-in-law advises drilling starting with a quite small bit and then use new gradually larger bits as you step up in hole size. This will cut down on the annealing, and will help eliminate the "bite" at the end of the final hole. 73 Warren KH6WM _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk |
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