Interactive Mediums Guide

Choose the characteristics you desire in a medium from one or more of the drop down menus below. Click “Select” to display the formula(s) we recommended for your intended effect.

 Gloss Level  Drying Time  Viscosity  Cohesion  

Gloss level: the amount of light refractive from the surface.

Drying time: the time required for a layer of oil paints to dry sufficiently.

Viscosity: the relative resistance of a fluid to stirring or movement.

Cohesion: the “tack” or intermolecular attraction that unites a medium/mixture into a paint film.


Quick Tips

  • When adding Cold Wax to a fluid medium, thin it first with Gamsol. On a separate palette, add a small amount of Gamsol into some Cold Wax and blend thoroughly with a palette knife until you achieve a very soft paste, nearly slurry consistency. This is your matting agent. Add the desired amount of Cold Wax slurry into a premeasured amount of fluid painting medium. Mix/shake thoroughly until you can hold the jar up to the light and it looks uniformly cloudy (no wax bits floating about).
  • For Underpainting and Oiling Out, we recommend a 1:1 mixture of Galkyd and Gamsol, OR a 2:1 mixture of Galkyd Lite and Gamsol.
  • Our three recommended glazing mediums: Galkyd Lite (low viscosity), Galkyd (high viscosity) and Neo Megilp (gel). A glaze layer should contain at least 10% oil color. Fluid mediums work best for Underpainting and Oiling Out.
  • Oil painting mediums should not be used as a varnish or final coat. Picture varnishes should be colorless and removable.
  • Gamsol can be used to thin Gamblin Solvent-Free Mediums to lower their oil (“fat”) content for Underpainting.


website - Dogpaw Studio