Thanks for the nice comments guys. The method used is as follows. I turned four pieces ( two of each colour for the bines)' then drilled each with a 22mm hole all through. Then each was end capped. I tried two different ways to cut the spirals. Firstly by hand, secondly with a router and the Trend router lathe. The spiral cuts finished within 6mm of the end. All four turnings were made to the same dimensions. Two were made with a right hand spiral and two with a left hand spiral. Then using a bandsaw, I cut into the end into the gap between the bines, firstly to make two halves of a pair and then these in half again to release each of the spirals. Finishing with various grits was then done. Two of each colour bine were put together to achieve the finished form and these were adjusted at the ends to give good joints, before gluing and clamping. The end caps were then cut off, the ends were cleaned up and new end caps added. This made four candleholders, two left and two right handed. They were finished on the lathe with four coats of acrylic lacquer. The tops and bottoms were then spun from pewter discs and ca glued in place.
The new techniques (new to me, that is) were making the twists and then cutting the pieces up and reforming. I am still learning the best way to make the twists by hand using a Dremel and small angle grinder. The Trend router lathe does limit the type and size of twist you can achieve. I will next build a similar system to use on the lathe. Hope this answers your questions. What I didn't mention is that there is a lot of sanding involved making these spirals. Malcolm.