SHOWMANS TWISTED BRASS

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SHOWMANS TWISTED BRASS

Post  craig@STW on Thu 21 Mar 2013, 1:19 pm

A quick video to show the twisting of the brass bar for the showmans roof struts. one end of the bar is held in the chuck of the lathe and the other end in the tool holder. the chuck is then rotated seven times to achieve the twist...



the pile of twisted brass



you can see the bar after the first twisting on the left of this photo, the one on the right has had a second twist to get a much tighter coil, this is how they will all look when finished



side view (struts still to have second twisting)



full production update for this week will be posted tomorrow or Saturday morning


Last edited by craig@STW on Fri 22 Mar 2013, 10:16 am; edited 1 time in total

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Re: SHOWMANS TWISTED BRASS

Post  Steam Traction World on Fri 22 Mar 2013, 2:44 am

Further to Craigs post showing the brass twisting; shortly after the video was taken we worked out a simple way of keeping the brass straight. Surprisingly, the 1.5m lengths of brass expanded during the twisting process by about 15mm. I would have though it would have shrunk! Shows how much I know.

Regards

Steve

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