Comply with alongside as Scott Maier explores three alternative ways of making ready a charcoal underdrawing for an oil portray.
Is it protected to create a charcoal underdrawing for an oil portray? The final consensus is that there’s nothing inherently fallacious about portray in oil on high of charcoal, though it might create considerably of a multitude with no layer of fixative to isolate the oil from the charcoal. Let’s examine three completely different strategies for prepping a charcoal underdrawing for an oil portray: Workable Fixatif, casein fixative and PVA measurement.
For this comparability, I primed cotton rag paper with acrylic gesso. After evenly sanding the floor, I created a charcoal drawing to function a highway map for the oil portray. Dividing the picture into fourths, I created vertical sections to match every fixative utility, leaving the primary part untreated.
Portray within the untreated part, the charcoal drawing lifts simply and rapidly muddies the paint. The charcoal does maintain higher in among the mild areas the place it has been smudged and labored into the floor. When glazing, scrubbing, wiping and scumbling the paint, nevertheless, the charcoal lifts simply.
Krylon Workable Fixatif is an acrylic product that creates a effective mist when sprayed on the floor of the paper. It prevents smudging and protects from any undesirable adjustments in the course of the utility of the oil paint. Working within the handled space, I’m impressed by how properly the charcoal stays in place. The paint adheres properly as I scrape, scumble and push it round. When wiped with a paper towel, the paint lifts comparatively simply to disclose the drawing beneath.
Casein fixative is a water-based product created from milk protein. It has been utilized by generations of artists as a protected technique of preserving charcoal drawings. When sprayed, it creates bigger particulates than Workable Fixatif. That is an impact I actually get pleasure from, because it helps to interrupt up among the hatch marks within the charcoal drawing. It protects the drawing fantastically, with a barely tough floor that accepts the paint properly. As with the Workable Fixatif, I can simply wipe and scrape the paint to disclose the underdrawing when wanted.
PVA measurement will not be technically a fixative, however I selected to work with it on this method to discover some brush results within the underdrawing. When utilized with a brush, it simply strikes the charcoal whereas drying to a easy floor that’s prepared for oil portray. Though noticeably smoother than the opposite surfaces, it nonetheless accepts the paint properly. The comb results created are attention-grabbing, however it’s clear this technique requires extra deliberate brushwork and planning. It capabilities extra as an underpainting than an underdrawing.
As you possibly can see from Laguna (oil with charcoal underdrawing on rag paper, 9×12), every technique has its personal advantages and disadvantages. For those who’re on the lookout for a everlasting fixative, casein and Workable Fixatif are supreme. Or, in the event you want to work straight in oil on high of a charcoal drawing with none fixatives or sizing brokers, be at liberty to experiment with that as properly. In the end, it’s as much as you because the artist to find which technique works greatest to your portray course of.