I bought a 9' piece of 1 3/16"304 stainless for $75. So for the price
I did not have much into it. I have the advantage of being the residential electric
/ industrial automation teacher in an amazing high school
. The school
has one of the best equipped machine shops in town. I love playing in that shop.
I center drilled the ends with a lathe set at 400 rpm
( drilling stainless is all about speed and feed). I drilled first with a 1/4" drill then a 9/16. Just standard bits.
For the slots I used a Bridgeport mill with a digital readout and power table.Digital readout and power table make it easier.
Milling machine bit was a 5/8" 2 flute high speed steel
. Milling machine was at 425 rpm
and the table drive was 1.5 inches a minute. I did each slot in 6 -8 passes. Start to finish each one took me about 1 1/2 hours. I had to order the taps as 5/8-16 thread is not standard, that was my biggest expense $98 ea.
Now I want to find silicone bronze and remake them so I don't have to worry about them galling. I will either buy some old 1 1/4 bronze prop shafts or a 12' lengths of rod for about $350. It would have been to easy and boring to buy new rigging.
I do not claim to be a machinist I just like to play one.