A very rare oil painting medium.
"Sun-Thickened Linseed Oil is made by exposing raw, cold-pressed linseed oil to sunlight in shallow tanks covered with clear glass and exposed to the atmosphere for a period of one month. To give the oil more body (higher viscosity), we place lead sheets in the tank and blow air through the oil for at least three more months. Trace amounts of lead may dissolve into the oil and may be present in the finished oil.
It is fast drying and will add gloss, leveling and flow out to oil paint. This oil can be used as a medium or added to homemade mediums.
Use turpentine, spike oil or mineral spirits as a solvent or diluent for oil painting mediums made with linseed oil."
This Sun-Thickened Linseed Oil is something new for me, expensive but has a slightly different feel, something to play with. Shops a nice source of some hard to find materials and and some very useful information too. The website made me want to make my own paint but better appreciate where the cost is. Goods came beautifully packed and delivered fast. Whats not to like.