Thanks for replying. But is that not just extra work then? Could've just cut the shape into a roughly shaped work piece and skip the turning
process. If that shape was achievable by hand shaping/cutting after the turning process , I can see them doing the same for the "smooth" columns
without the need for a lathe. The concept of using a lathe is definitely interesting and probably not out of the realm of possibility, but I'm still
leaning towards it being done by some other, more manual labor type, method. Thanks for this thread btw. Been enjoying the insights shared on the
subject.
Hi Dvmr,
Yes indeed it’s extra work, but it’s the look they were going for. Often times in manufacturing something it’s a several-stage process .
So my thoughts on the ‘turning ‘ side regarding that piece is this :
If the outside circumference were not ‘true’ or as near to perfectly circular as one can get , it would affect the way the flutes are cut into it;
there would be an uneven look to the fluting and each uneven flute would have a knock on effect to the next , continually throwing the whole thing out
as the work progressed.
The thinnest sections you can see ‘between’ each flute are the true diameter that was turned - the actual ‘outside’ of this circle , and the
flutes are cut in after to create the effect .
If it was not done to a set of tolerances , or template numbers, you could not stack these pieces without them looking odd, and the
possibility/probability of the flutes not lining up accurately would be very high.
The ancient Greeks did have a vertical lathe called a ‘Tournos’ I believe and the same principles apply vertically as horizontally.
Turning the piece against a fixed tool will provide a highly accurate circular piece to then divide accurately for fluting.
I know they LOOK like gears , but this is from the same site and was link posted earlier in the thread - a fallen set of these stacked pieces .
.. and it’s not to say that the ancient Greeks couldn’t have produced similar sized actual gears from various materials , but these in the
pictures are most probably marble too, you MIGHT need a harder stone for effective gears of this size , I don’t know though !
And ps- as much as ‘experts’ would disagree with me, those flutes are all so beautifully done, accurate , symmetrical and similar , that to me
personally, they look like they were done with a rotating rounded ‘ball nosed ‘tool on a guide .
I’d love to measure them.
Pps- I count 24 flutes on that piece . There must be circular accuracy to achieve that number throughout the length of the column repeatedly for each
section .
a reply to:
Dmvr34
edit on 22-2-2023 by bluesfreak because: (no reason given)
edit on 22-2-2023 by bluesfreak because: (no reason
given)