Danish oil

Danish oil is a wood finishing oil, often made of tung oil or polymerized linseed oil, although there is no defined formulation so its composition varies among manufacturers.

Danish oil being applied to a wooden plinth

Danish oil is a hard drying oil, meaning it can polymerize into a solid form when it reacts with oxygen in the atmosphere. It can provide a hard-wearing, often water-resistant satin finish, or serve as a primer on bare wood before applying paint or varnish. It is a "long oil" finish, a mixture of oil and varnish, typically around one-third varnish and the rest oil.[1][2]

Uses

When applied in coats over wood, Danish oil cures to a hard satin finish that resists liquid well. As the finished coating is not glossy or slippery, it is a suitable finish for items such as food utensils or tool handles, giving some additional water resistance and also leaves a dark finish to the wood. Special dyed grades are available if wood staining is also needed.

Application

Compared to varnish it is simple to apply, usually a course of three coats by brush or cloth with any excess being wiped off shortly after application. The finish is left to dry for around 4-24 hours between coats, depending on the mixture being used and the wood being treated. Danish oil provides a coverage of approx 12.5 sq. m/l (600 sq. ft./gallon).[3]

Spontaneous combustion

Rags used for Danish oil, like those used for linseed oil, have some potential risk of spontaneous combustion and starting fires from exothermic oxidation, so it is best to dry rags flat before disposing of them, or else soak them in water.[4]

See also

References
  1. Allen, Sam (1995). Classic Finishing Techniques. New York: Sterling Publishing. p. 70. ISBN 978-0-8069-0513-6.
  2. Haynes, Williams (1946). "XIX: Materials for To-morrow". This Chemical Age. London: Secker and Warburg. p. 247.CS1 maint: ref=harv (link)
  3. Jackson, Albert; David Day (1996-10-03). Collins Complete Woodworker's Manual. HarperCollins. ISBN 978-0-00-414005-6.
  4. "Archived copy". Archived from the original on 2015-05-15. Retrieved 2015-05-25.CS1 maint: archived copy as title (link)
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