Solvent-Free Gel and Solvent-Free Fluid are painting mediums made from safflower oil and alkyd resin with no solvent. Why safflower? We chose safflower for these mediums because of its paler colour. The alkyd resin, which is essentially a highly polymerized oil, accounts for the faster drying rate of these materials, compared to either linseed or safflower oils used alone. In regards to their drying, these mediums have a “moderately fast” drying rate – meaning that thin layers will dry to the touch in approximately 36 – 48 hours. Because they rely solely on oxidation to dry, they have a longer working time compared to our Galkyd mediums, which begin to tack up as their Gamsol content evaporates from paint layers. As part of our Solvent-Free system, we’ve also made straight Safflower Oil available for brush cleaning and creating slower-drying mediums. The biggest difference between the Solvent-Free Fluid and the Gel is their consistency. The Fluid medium more significantly increases the flow of oil colours off of the brush. In terms of its working properties, it is similar to either straight linseed or safflower, though faster-drying. Brush-marks will be slightly levelled, or “rounded” when using the Fluid. Of all the mediums we make, Solvent-Free Gel is the densest, closely resembling the paint from the tube. Though it will increase the flow off the brush to some degree, its gel consistency will retain sharp, defined brush-marks. For painters who prefer to use just a little medium to give their colours a more buttery feel, Solvent-Free Gel is perfect. Both Solvent-Free Fluid and Gel increase the flow of oil colours, increase transparency, gloss and colour saturation
