Positioning the casing in the vice

<p>This is the elliptical mid-section casing positioning in the mill. Prior to this the ellipse had been fabricated by both hand and mill. I didn&#39;t take photos of this process unfortunately but it consisted of the following:</p> <p>Calculating the length of brass required for the circumference of the ellipse</p> <p>Cutting a strip of brass from plate to the correct length</p> <p>Hammering the strip of brass into a circular shape so the two ends can meet</p> <p>Making sure the ends meet with a good contact join, so filing and sawing to adjust</p> <p>Soldering the two ends together to make a joined ring</p> <p>Hammering the ring into as near an ellipse as possible</p> <p>Positioning on the mill so that the minimum material is removed from the outside of the hammered ellipse in order to achieve a perfect ellipse</p> <p>Reposition the chuck vice so that the inside of the ellipse can be cut and re-position the work piece so that the previous elliptical cut is used as the basis for truing-up the current cut</p> <p>Quite a lot of things to do there! It&#39;s a shame I didn&#39;t take any photos!</p> <p>&nbsp;</p>

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Girl Chorister Medals