[GreenKeys] Old Pencil Rubber Erasers

[Peter Gottlieb]

That assumes that the only degradation of rubber is drying out, but there are 
cracks created from shrinkage and drying as well as oxidation and other chemical 
processes.  So while the hoses might regain their original softness and 
flexibility, I would not expect them to meet pressure spec or be as reliable.  
Depending on how over-designed they were and your demands, they *might* work for 
you...


On 4/26/2013 8:35 AM, Rokumon Cat wrote:
> Years ago, when I was young and ambitious, I found an old, 1969 Toyota 
> Corolla. I decided to restore this car to the way it was when it was sold. So, 
> after a friend rebuilt the motor, I took the rubber heater hoses, washed with 
> water, then put them it a pail full of the old style DOT-3 brake fluid (the 
> old stuff, I think it was alcohol and castor oil... not the new silicon 
> stuff). Forgot them for a month or so, and when I pulled them out of the 
> stuff, they were as soft and pliable as the day they were made.
> Joe
>
> --- On *Thu, 4/25/13, Norm /<normand3 at q.com>/* wrote:
>
>
>     From: Norm <normand3 at q.com>
>     Subject: [Green Keys] Old Pencil Rubber Erasers
>     To: greenkeys at mailman.qth.net
>     Date: Thursday, April 25, 2013, 7:31 PM
>
>     Does anyone know how to restore the hard smudgy eraser for clean erasing.
>     Norm
>     WB7WEQ
>
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