Washing linseed oil

[Michael_Molnar]

Sometimes we get distracted from making instruments and get bogged down with extraneous issues along the way. I think this thread is an example. However, if you really get a thrill out of preparing linseed oil, go for it.

[Frank Nichols]

2 hours ago, Peter K-G said:

Kimmo,

Some years ago I tested linseed oil for my varnish cooking, domestic linseed oil was the best (Wanha viljami, sateenkaari värit)

If you cook it for 4-5 hours in a double boiler, standing on a piece of wood (see last image) you will get a very siccative oil for your varnish, that cures with minimal UV.

The color is not that important, it will get transparent in half a year to one year without UV anyway and has no influence on varnish drying time.

Is the wood to add tannin?

[Jim Bress]

10 minutes ago, Frank Nichols said:

Is the wood to add tannin?

Wood sticks under the jar of a double boiler to avoid a hot spot at the bottom of the jar where the jar is in direct contact with the pot. 

[Frank Nichols]

Thank you, I missed that, I thought it was referencing the one in the jar in the last photo

 

[Kimmo89]

I will be washing more linseed oil after I get to better water.

These ones I have already wasted.

 

Next, I have to try to make darker colour from varnish.

This one is touch dry in 4 hours in the sun, with temperature about 12C outside.

I think in this case, the varnish is succes, but Im not sure about colour. I have to add more layers to see if its too orange.