https://www.youtube.com/embed/pva5NwCwwGk

On 15/07/2016 07:20, harry wrote:
https://www.youtube.com/embed/pva5NwCwwGk



Any idea how the cutting wires work?

"GB" wrote in message ...

On 15/07/2016 07:20, harry wrote:
https://www.youtube.com/embed/pva5NwCwwGk



Any idea how the cutting wires work?

Same method was used raising the Kursk (Russian nuclear sub that sank). The
steel wire has many bobbins of steel threaded onto it that have carbide
fused into the surface. The wire is used like a giant band saw, the seawater
acting as an effective coolant.


Andrew

On 15/07/2016 08:41, Andrew Mawson wrote:
"GB" wrote in message ...

On 15/07/2016 07:20, harry wrote:
https://www.youtube.com/embed/pva5NwCwwGk



Any idea how the cutting wires work?

Same method was used raising the Kursk (Russian nuclear sub that sank).
The steel wire has many bobbins of steel threaded onto it that have
carbide fused into the surface. The wire is used like a giant band saw,
the seawater acting as an effective coolant.


Andrew

Thanks. I don't think I'd want to be within a few hundred metres of that
arrangement!

They have to thread it under the wreck somehow?

GB wrote
Andrew Mawson wrote
GB wrote
harry wrote

https://www.youtube.com/embed/pva5NwCwwGk

Any idea how the cutting wires work?

Same method was used raising the Kursk (Russian nuclear sub that sank).
The steel wire has many bobbins of steel threaded onto it that have
carbide fused into the surface. The wire is used like a giant band saw,
the seawater acting as an effective coolant.

Thanks. I don't think I'd want to be within a
few hundred metres of that arrangement!

No reason why it should fail dramatically.

They have to thread it under the wreck somehow?

Yeah, that's what a graphic showed.

On 15/07/2016 10:42, Rod Speed wrote:
GB wrote
Andrew Mawson wrote
GB wrote
harry wrote

https://www.youtube.com/embed/pva5NwCwwGk

Any idea how the cutting wires work?

Same method was used raising the Kursk (Russian nuclear sub that sank).
The steel wire has many bobbins of steel threaded onto it that have
carbide fused into the surface. The wire is used like a giant band saw,
the seawater acting as an effective coolant.

Thanks. I don't think I'd want to be within a few hundred metres of
that arrangement!

No reason why it should fail dramatically.

You've got this steel cable with sharp bits on it, whirling around. What
could possibly go wrong?



They have to thread it under the wreck somehow?

Yeah, that's what a graphic showed.

The graphic didn't show how they did that bit, though.

On Fri, 15 Jul 2016 10:33:11 +0100, GB
wrote:

snip

Thanks. I don't think I'd want to be within a few hundred metres of that
arrangement!

They used a similar system to cut the exit door (for H&S reasons) in
the bottom of the Secret Nuclear Bunker at Kelvedon Hatch.

They have to thread it under the wreck somehow?

In this case of this 10' thick reinforced concrete bunker wall, they
drilled holes through the wall at the top and bottom of where they
wanted one side of the cut to be and threaded a coated wire though and
back and around a driving wheel of one sort (there may have been an
idler pulley on the other side to start with). The wire was then
circulated till it cut though (or something like that).

The cut finish feels is very smooth (but not flat) and it's
interesting to see how accurately arranged the reinforcing rods were
and how consistent the concrete mix was. I understand it was also
'poured' in a continuous process so there were no 'joints' that could
possibly weaken the structu

You can see the 'Exit door' at 9:10 here and the pattern on the walls
where the wire 'cutter' ran. [1]

https://www.youtube.com/watch?v=vnCXMp7O3xo

Cheers, T i m

[1] I think he said the Company cutting the hole quoted for some 2
weeks of work and it took more like 8! ;-)

On Sun, 17 Jul 2016 11:44:37 +0100, Chris Hogg wrote:

snip

[1] I think he said the Company cutting the hole quoted for some 2
weeks of work and it took more like 8! ;-)

Dimension stone is cut in much the same way. Although large diamond
saws are now widely used, for the largest pieces they use a long wire.
In times past, the wire was passed through a bath of sand that acted
as the abrasive, but these days the wires have silicon carbide or
diamond-impregnated ferrules along their length. See
http://tinyurl.com/hogxeko

It's funny they look just like big bench bandsaws. ;-)

http://tinyurl.com/6wo55oq and scroll down,

Interesting.

http://tinyurl.com/zjh4fll

Gnarly. ;-)

and http://tinyurl.com/zd7q6cy

Yeah, the right hand diagram is what I believe they did on the SNB
exit.

If you were cutting a plane through a rectangular block using a 'loop'
driven from one side, I wondered how the cutting wire would cope with
the initial 'corners' opposite the driven side of the loop? Like, I
wondered if you might initially use an idler pulley (or two) on the
undriven side to initially get the wire to 'round' the corners and
then the idler could be removed and the loop drawn trough?

Cheers, T i m

On Fri, 15 Jul 2016 10:33:11 +0100, GB
wrote:

On 15/07/2016 08:41, Andrew Mawson wrote:
"GB" wrote in message ...

On 15/07/2016 07:20, harry wrote:
https://www.youtube.com/embed/pva5NwCwwGk



Any idea how the cutting wires work?

Same method was used raising the Kursk (Russian nuclear sub that sank).
The steel wire has many bobbins of steel threaded onto it that have
carbide fused into the surface. The wire is used like a giant band saw,
the seawater acting as an effective coolant.


Andrew

Thanks. I don't think I'd want to be within a few hundred metres of that
arrangement!

How about this close?

http://dondougan.homestead.com/WireS...eyJunction.jpg

I think he has at least got his PPC waistcoat on. ;-)

Cheers, T i m

harry wrote:
https://www.youtube.com/embed/pva5NwCwwGk

Interesting video but why the music?????

"Bob Minchin" wrote in message
...
harry wrote:
https://www.youtube.com/embed/pva5NwCwwGk

Interesting video but why the music?????

To make farts like you choke on your coffee.

En el artículo , Bob Minchin bob.minchinREM
escribió:

harry wrote:
https://www.youtube.com/embed/pva5NwCwwGk

Interesting video but why the music?????

+1. Really annoying and completely unnecessary.

Fascinating video, thanks for posting the link harry. I've sent it on
to a mate of mine who used to work as a sparky on those ships.

--
(\_/)
(='.'=) systemd: the Linux version of Windows 10
(")_(")

On 7/15/2016 7:20 AM, harry wrote:
https://www.youtube.com/embed/pva5NwCwwGk

Amazing, thanks for posting.