Rethink Your Life!
Finance, health, lifestyle, environment, philosophy
The Work of Art and The Art of Work
Kiko Denzer on Art
[Cob] Linseed and sunflower oiljane at kirstinelund.dk jane at kirstinelund.dk
Mon Mar 28 11:17:15 PST 2005
According to my teachers in wood carving and the like linseed oil has special properties. It hardens as it dries which creates a (more or less) watertight surface. Boiled linseed oil hardens faster, but raw linseed oil also hardens after some time - how fast and how well depends on the quality of the oil. (One problem with buying boiled linseed oil is that it normally contains rather toxic chemicals to ease the drying. It might be possible to buy non-toxic boiled linseed oil, though.) It is possible that cooking other kinds of oil will make them harden too, but I have never heard of it. And for a floor you definitely need a hardened surface. From what I have heard getting a good surface on a clay floor is pretty tricky, and even if sunflower oil works for paint, it doesn't follow that it works for floors. It would be an interesting experiment, though. It wonder what this "danish" tung oil you write about is (I'm danish). We have something called "tonkin-laque" which is based on linseed oil, and which is supposed to make a very resistant surface. If tung oil is the same as tonkin-laque i would suppose that you could make a cob bathtub with it, though you would probably have to re-laquer it at regular intervals, and leave it to dry and hardenfor some time before using it again. And a warning: From what I have learned you risk spontaneous combustion with ALL linseed oil, not only boiled. So never leave linseed oil soaked paper or cloth around. The simplest thing is to burn it right away, or at least leave it on the stove or fireplace, but if we are talking large quantities this might not be so environmantal friendly. You can also put it in water, but then you have to do something with it afterwards. Jane
Solar powered hosting (from our cob office building) provided by: DeaTech Research Inc. using Debian Linux based servers. We highly recommend, use, and provide support services for Debian Linux.
If you should have any problems with this page or website, please send email describing the problem(s) to: email@example.com
Last Modified: Wednesday, 09-Dec-2009 17:36:03 PST
If you wish to be permanently blocked from ever being able to send email to this domain, send your SPAM messages to: firstname.lastname@example.org