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Making Varnish without Solvents


xraymymind
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Hey all,

I wonder whether anyone here has made a Resin/Linseed Oil varnish, to which they did not add any Turpentine (or other solvents) while it cooled (which is something I have always done).

What was the outcome like? Were you still able to thin it with a solvent to brush later, or keep it thick for glazing purposes etc.?

Any opinions on this would be much appreciated.

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8 minutes ago, xraymymind said:

Hey all,

I wonder whether anyone here has made a Resin/Linseed Oil varnish, to which they did not add any Turpentine (or other solvents) while it cooled (which is something I have always done).

What was the outcome like? Were you still able to thin it with a solvent to brush later, or keep it thick for glazing purposes etc.?

Any opinions on this would be much appreciated.

Why would you want to?

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39 minutes ago, xraymymind said:

Hey all,

I wonder whether anyone here has made a Resin/Linseed Oil varnish, to which they did not add any Turpentine (or other solvents) while it cooled (which is something I have always done).

What was the outcome like? Were you still able to thin it with a solvent to brush later, or keep it thick for glazing purposes etc.?

 

Yes and yes, for resin:oil ratio less than 1.5:1.

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1 hour ago, xraymymind said:

Hey all,

I wonder whether anyone here has made a Resin/Linseed Oil varnish, to which they did not add any Turpentine (or other solvents) while it cooled (which is something I have always done).

What was the outcome like? Were you still able to thin it with a solvent to brush later, or keep it thick for glazing purposes etc.?

Any opinions on this would be much appreciated.

If you are talking about making a solvent free oil varnish than yes many here have done that. Typically 1:1 ratio of linseed oil to cooked resin by weight. Have a look at the Bass Book by Roger Hargrave. It is all there. 

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1 hour ago, JacksonMaberry said:

@Jim BressBress makes a fine solvent free varnish. Perhaps he'll share his thoughts. I have an article coming out soon and once it is printed will share the technique on MN as well. I prefer a 3:2 oil:resin ratio myself for a variety of reasons and especially absent solvents a fatter varnish should brush easier.

 

1 hour ago, Urban Luthier said:

If you are talking about making a solvent free oil varnish than yes many here have done that. Typically 1:1 ratio of linseed oil to cooked resin by weight. Have a look at the Bass Book by Roger Hargrave. It is all there. 

This is the varnish I make.

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