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-   -   How to age Caledon tubing? (https://www.fordbarn.com/forum/showthread.php?t=281590)

John Dayhuff 05-25-2020 06:58 PM

How to age Caledon tubing?
 

Hi Everyone,
I'm going to replace a piece of gas line tubing with a new piece that I bought from Snyders but I want to give it that "patina" look of 50+ years old so that it doesn't stick out like a sore thumb next to everything else under the hood. Any ideas of what it's made out of and how I can age it without waiting another 50 years?
Thanks,

wmws 05-25-2020 08:12 PM

Re: How to age Caledon tubing?
 

I made a gas line out of hydraulic brake line tubing. It was a darker color sort of dark green.

Jack Shaft 05-25-2020 08:30 PM

Re: How to age Caledon tubing?
 

A friend used to soak his Vw parts in brine to "age" them

chrs1961815 05-25-2020 09:09 PM

Re: How to age Caledon tubing?
 

You could try soaking in salt water which would do the job pretty quickly.

1crosscut 05-25-2020 09:22 PM

Re: How to age Caledon tubing?
 

If it has a plating type coating on it a dip in muratic acid and water mix of 50/50 will most likely take it off leaving it bare steel. If you want it to have a rusted type look spray it with salt water mix and let dry. Spray and let dry. Repeat, repeat, repeat. Drying in between is important as steel needs oxygen to rust.

dumb person 05-26-2020 03:54 AM

Re: How to age Caledon tubing?
 

Yuck, use no corrosives or you might as well have used a line you found in a wreck in a forest.

I use linseed oil, leave item in the sun, or bake lightly after applying. You're not trying to cook it. Just dry it. I left a set of new keys dipped in linseed oil on top of the toaster for a few cycles. Dried ok.
It ages & goes brown rather quickly when heated.

MikeK 05-26-2020 08:16 AM

Re: How to age Caledon tubing?
 

The original gas line was terne coated seamed steel tubing. Terne is an alloy of less than 20% tin, sometimes 1 or 2% antimony, and the remainder lead. It quickly aged to a dull 20% brightness gray color. The quickest cover up that is about the same appearance and that will hold up without damaging the new line is a rattle can of dull zinc rich 'galvanize'. Not the expensive shiny stuff, the standard dull kind.

Of course, if you are into fine-point or want the absolutely untouched, un-restored, all original parts look, you can get a long length of today's electro-zinc plated steel line, set up a fixture and profiled tool bit to cut the appearance of the original seam, mix up your own terne, use an acid flux and a pad like an old-time plumber making a wiped joint, and wipe the terne onto the tube at about 700F. Then if you want the aged look just wait!

Ak Sourdough 05-26-2020 04:51 PM

Re: How to age Caledon tubing?
 

For quick darkening, you might try scuffing it with a scotchbrite pad and wiping some old black waste oil on it to get some carbon in the new scratches.

John Dayhuff 05-26-2020 09:47 PM

Re: How to age Caledon tubing?
 

Thanks for the ideas so far guys, keep them coming.


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