Model Engine Maker

Help! => Specific Engine Help => Topic started by: HobbyNut on September 11, 2014, 04:38:15 PM

Title: Copper tubing help
Post by: HobbyNut on September 11, 2014, 04:38:15 PM

Is there a source of copper tubing that is smaller than 1/8" dia. in Nth America?

Title: Re: Copper tubing help
Post by: Jo on September 11, 2014, 04:46:36 PM

Internal or external diameter?

And what were you hoping to pass through it? (Governs if it is practical to use it)

Jo

Title: Re: Copper tubing help
Post by: Jasonb on September 11, 2014, 04:49:00 PM

3/32" OD

http://www.pmmodelengines.com/shop/materials/copper-tube/

Tube is generally OD and pipe ID

Title: Re: Copper tubing help
Post by: Allen Smithee on September 11, 2014, 04:56:13 PM

Take some 1/8 tube, anneal it and pull it through a die...

 :mischief: :mischief: :mischief:

AS

Title: Re: Copper tubing help
Post by: HobbyNut on September 11, 2014, 05:16:10 PM

Thanks again for all the help people.. I just went on PM's site, and yes they have 3/32 OD c/w fittings. I will send an order very soon.

Quote from: Allen Smithee on September 11, 2014, 04:56:13 PM

Take some 1/8 tube, anneal it and pull it through a die...

 :mischief: :mischief: :mischief:

AS

yes, sure I want to do that!!!!!

Quote from: Jo on September 11, 2014, 04:46:36 PM

Internal or external diameter?

And what were you hoping to pass through it? (Governs if it is practical to use it)

Jo

Diesel fuel Jo....not much of it though!
I am busy on The 2nd Lister build.

Title: Re: Copper tubing help
Post by: Roger B on September 11, 2014, 05:37:59 PM

Here, Switzerland, I can get 1mm bore 2mm outside diameter that I was looking at for the injector piping when I eventually get round to building my diesel. If you can't find anything in the US I will buy some and put a bit in an envelope and send it to you.

Title: Re: Copper tubing help
Post by: b.lindsey on September 11, 2014, 05:44:03 PM

Pat,
You might check here too...

http://www.micromark.com/SearchResult.aspx?deptIdFilter=0&searchPhrase=copper+tubing

Bill

Title: Re: Copper tubing help
Post by: Ramon Wilson on September 11, 2014, 05:47:30 PM

This stuff is usually available at most model shops - good selection all round
http://www.ksmetals.com/24.html

I've used their copper tube down to 1/16 - very malleable

Ramon

Title: Re: Copper tubing help
Post by: Hugh Currin on September 11, 2014, 07:31:40 PM

They make small diameter tubing for syringe needles (http://www.hamiltoncompany.com/products/syringes/c/728/) in various sizes. I haven't tried to order any. I think it's all stainless though.

Hugh

Title: Re: Copper tubing help
Post by: HobbyNut on September 11, 2014, 08:42:06 PM

Thanks again all for helping me out.
The PMR site is most helpful as they have the nuts and ferrules also.
I have tried to find some K&S locally, but most hobby shops have brass and aluminum tubing.

Title: Re: Copper tubing help
Post by: GWRdriver on September 11, 2014, 10:59:14 PM

Pat,
For future reference, for very small diameter copper tubing, look for "capillary tubing" as used in HVAC control systems.  This is available from any decent HVAC supplier in small increment ODs from 0.070" to 0.190" (or the Metric equivalent.)   Normally packed in 100ft coils, which is a lot, but a local HVAC/Mechanical controls contractor may snip you off a piece.  One listing I saw offered 0.090" and 0.100" ODs.

Title: Re: Copper tubing help
Post by: HobbyNut on September 12, 2014, 06:10:45 AM

Thanks Harry, I can try that avenue too.