Thin 0.25mm guitar string type wire

[johnwalls26]

Hi all,

I'm after sourcing about 20m of 0.25mm diameter steel spring type wire.
The closest thing I can think of would be a steel guitar string.

I'm not sure what the the correct search term would be.
Can anyone help?

Many thanks

Maybe stranded wire like I used for control line model aeroplanes in the 60s. Current model shop stuff is expensive, and Piano wire is almost rigid and only sold in metre lengths. Try this: https://www.ebay.co.uk/itm/38758327...e&itmmeta=01JCPACVYNE4FQF51T244AAERQ&hash=ite

 

[Fergie 307]

10m or even 5m will be fine.
I bought some 0.3mm jewellery wire the other day from Amazon but it wasn't what I was after as it wasn't springy – it’ll get used but not for this..
The stuff I’m after naturally wants to straighten itself, like guitar string wire.

Most comes in hard and soft grades.

 

[Fergie 307]

An explanation of proposed usage:
Many year ago my job was assisting anaesthetists in hospital operating theatres. One diagnostic technique we used was to insert a central venous pressure catheter for monitoring blood volume. The CVP line was a long thin plastic tube that was inserted over a thin wire and into a vein. Once the distal end of the wire was in the right anatomical place, the catheter was slid over the top. Once the tip of the catheter was in the right spot, the guide wire could be removed.

Fast forward 40 years and I’m now running a repair shop specialising in coffee machines.

Coffee machine water heaters generally comprise of a spiral of metal tubing cast into a metal block together with the heating element. These heaters often block up with limescale right in the middle of the length of pipe. Injecting an acid solution at the inlet/outlet port fails because the liquid hits an air block in front of the limescale. My technique is to insert a fine PTFE pipe into the inlet/outlet until it hits the limescale – I then inject the acid. To help get the pipe into the right place I’d like to add some rigidity to the PTFE pipe by having some thin (0.3mm) spring steel inside the pipe to help guide its way….
Alternatively, put the wire in first, then slide the pipe over the top – then remove the wire.

Thanks again.

https://en.wikipedia.org/wiki/Seldinger_technique
www.youtube.com/watch?v=HuJzn_PF118
www.facebook.com/bassettrepairshop/

Use the reverse of that method to pass wires through bellows type rubbers you get on cars, typically between the doors and body. Pipe in, once it is out the other side push the cable through and pull the pipe out.

 

[johnwalls26]

Maybe stranded wire like I used for control line model aeroplanes in the 60s. Current model shop stuff is expensive, and Piano wire is almost rigid and only sold in metre lengths. Try this: https://www.ebay.co.uk/itm/38758327...e&itmmeta=01JCPACVYNE4FQF51T244AAERQ&hash=ite

And a tech spec on PAW control line wire. If you are not familiar with this type of wire think cheese cutting wire. https://www.eifflaender.com/spares

 

[ChaiLatte]

Maybe stranded wire like I used for control line model aeroplanes in the 60s

If the overall wire diameter is 0.25mm, please advise the likely diameter of each strand, and total number of strands.

 

[johnwalls26]

If the overall wire diameter is 0.25mm, please advise the likely diameter of each strand, and total number of strands.

Usually 3 strand, so just divide by 3. The PAW spec sheet (see above) gives an idea of the wire form. What I don't know is the internal diameter of coffee machine pipes and how stranded wire would react when meeting trapped furring. It would appear from the PAW specs that the strands have been run through a solder bath, possibly the end could be unsoldered to create a mini brush.

 

[RonnieI]

Hi all,

I'm after sourcing about 20m of 0.25mm diameter steel spring type wire.
The closest thing I can think of would be a steel guitar string.

I'm not sure what the the correct search term would be.
Can anyone help?

Many thanks

Orthodontic wire. Ideally 0.020 Australian wire. It's quite brittle so bending it is a bit awkward but it's nice and stiff. I'll have a look in my box of old dental kit and see what I've got.