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<p>[QUOTE=&quot;KingofThings, post: 297572, member: 468&quot;]The &#039;cool&#039;est tight tolerance work I ever helped with was on my last ship, a destroyer.</p><p>Before I had arrived, an accident had occurred with the stern 3&quot; gun mount. <img src="styles/default/xenforo/smilies/frown.png" class="mceSmilie" alt=":(" unselectable="on" /></p><p>~</p><p>There was a steel cover plate over the deck mount which I had to weld lifting tabs to.</p><p>Of course this was the first thing I had to do aboard and so all the officers were watching including the Captain. Kind of a working interview if you will. <img src="styles/default/xenforo/smilies/wink.png" class="mceSmilie" alt=";)" unselectable="on" /></p><p>~</p><p>So the shipyard guy, whose responsibility was mounting the turret, was there and the new gun turret was ready on the pier.</p><p>~</p><p>So the plate was lifted off and to the pier without issue. <img src="styles/default/xenforo/smilies/smile.png" class="mceSmilie" alt=":)" unselectable="on" /></p><p>Then the turret was lifted aboard and we set some tapered alignment pins to hold it in place temporarily.</p><p>~</p><p>I had a small, very old, lathe in my shipboard repair and maintenance space and he had brought all the bolts AND dry ice!</p><p>~</p><p>So...&#039;we&#039; micro measured each hole in the turret base itself and the matching plate in the deck.</p><p>~</p><p>Then we turned the, oversized, new bolt down to a few thousandths over the diameter of the hole, in the lathe .</p><p>Then the bolt went into the dry ice for a bit...</p><p>Then we scampered quickly up to the mount and fit the bolt into its particular hole.</p><p>~</p><p>As you can imagine the gun turret has to be immovable...and this surely does it. <img src="styles/default/xenforo/smilies/smile.png" class="mceSmilie" alt=":)" unselectable="on" /></p><p>A great experience that was.[/QUOTE]</p><p><br /></p>

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