On 14 Jan 2011, Bo Albrechtsen wrote: 

> /Julia is perfectly right/ in exclaiming her "aaaaaaaagh" !

Thank you, I have been well trained!

> Vegetable oil such as the cold press, extra virgin etc .... in time any such 
> oil will change 
> from being an oil and into first a gummy substance 

...which was known as a snotomer in the Polymer Research Unit in which I spent
 10 years as a technician. As I've said before. Wonderful term, so descriptive 
and 
generally recognisable.
 
>   Olive oil will solidify a lot slower than 
> linseed oil but it will become sticky and gluey relatively fast 

Particularly when in contact with metals such as brass  and nickel silver whose 
components are sometimes part of catalysts - ie they speed the process up.
Which I'm convinced doesn't help.

>  Paraffin oil/liquid paraffin etc 
> etc is a mineral-oil product which is cheap, not drying and does not 
> smell at all. It does  tend to evaporate however very slowly over time 

I have observed a tendency for it to start causing rotting of the cotton 
threads 
that I use, a process I'm still keeping an eye on and I'm not drawing any 
conclusions yet. At present it's just something to bear in mind. Others 
disagree.

Julia



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