looking at the dimension's shirley ( stop calling me shirley ) 15 mm copper tube would do the trick with 90 deg elbows at each end.
you can bend "new soft" copper tube over your knee the amount you need in the picks.
you might mess a few up but its not that expensive.
if you want to get really tech cap off , fill with sand ram down till hard cap the other end off then bend away no crimping
use a piece of drain as a mandrel. you could always run a blow torch over before to anneal the tube.
with sand bet you could do larger as well.

Get a plumbers spring! Thats what you use to bend over your knee.

What you making like??

got posted wrong , must have hit new topic without realising
was in response to some Arial question some one posted .
he was trying to make a long spiral

my next random post will be !

12" insert forcefully using lubricant, twist if necessary , use tie wraps if that helps .

" but that was the wrong forum all together"

quote:

---

Originally posted by bart
got posted wrong , must have hit new topic without realising
was in response to some Arial question some one posted .
he was trying to make a long spiral

---

I like the idea of wholly random posts,....

how about?

I would have seen it but it was foggy and I was asleep.....

quote:

---

Originally posted by HowardB
I like the idea of wholly random posts,....

how about?

I would have seen it but it was foggy and I was asleep.....

---

I finally managed to explain myself and had a good laugh about it with the judge.

quote:

---

Originally posted by gremlin1234

quote:

---

Originally posted by HowardB
I like the idea of wholly random posts,....

how about?

I would have seen it but it was foggy and I was asleep.....

---

that'll be the eclipse on Friday!

---