Category Archives: oil

bookshelves

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More experiments with oils, getting to know their properties and how they behave. I wanted to get away from using an on-screen photo as a reference, but painting the bookshelves in the corner of the room presented the problem of continually changing light. Not only did the illumination in the corner of the room change during the few hours spent painting but the painting itself was in turn lit by overcast clouds, direct sunlight and sunlight through a drawn curtain – not ideal, but it underlined the importance of consistent lighting when attempting to get any sort of accurate colour.

I started with a perspective sketch and spent some time with a pencil held at arm’s length to get the proportions right. The various mistakes (such as the angle of the top of the books on the lower shelf) were going to be corrected the next day, but the paint had already become tacky and unworkable. Maybe the way round that is to let it dry even more before correcting, or use a slow drying medium so the paint stays workable for days.

I’d bought some low-tack masking tape to hold down the acrylic paper, hoping that would cure the problem of the paper ripping on removal. If anything, this was worse than the masking tape bought from the DIY shop. Perhaps I need to rethink the whole painting on paper technique.

black and phthalo blue

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Copied from a photo and from life using oils on paper, this painting took a beating as I tried to get it in to shape.

The first problem was finding the right mix of paints to match the intense, saturated mid-green colour of the transmitted light passing through the mint leaves (yes, they’re mint leaves). I had ultramarine blue and azo yellow but really needed something like phthalo blue to get that high chroma acid green which could be adjusted with yellow and titanium white.

I ended up buying a tube of Winsor Blue which had the colour labelled as PB15:3. Only later did I realise that I’d bought Winsor Blue Red Shade when I really needed Green Shade (PB15). Also, the tube was regular oil paint, not the water-miscible oil I was using. I was hoping (after reading online forums) that I could clean up the brushes with just soap and water, after all it is just oil. It does clean up but needs a lot more working in to the bristles of a lot more detergent than is needed for the Holbein Duo Aqua oils, and phthalo blue being an intense staining colour doesn’t help.

Anyway, all that palaver resulted in the rather insipid green on the right-hand leaves.

The backdrop was a black shirt hung up behind the vase which was sitting on some white kitchen roll. (I thought a white surface would be an improvement on the imitation wood formica table top — am I ruining the mood?)

I managed to mix up the background black a little too well, and the first draft looked dead and flat. Closer inspection of the flowers showed they had more depth and variety of values than I had initially painted, so I decided to try glazing on some darker values to create more contrast.

Instead of burnt umber I used a mix of more translucent paints for the glaze, hoping I could build up tones while letting the colours beneath shine through. In my haste the glaze mixed in with the titanium white of the table top which I hadn’t allowed to dry. The resultant murky mess was nothing like the subtle glazes found in the paintings of the old masters, instead it looked as if I’d spilt something.

I used more kitchen towel to scrub off the ‘glaze’ and tried a few more times, with similar results.

Eventually I got to that point where I knew the painting was lost. So I patched up the table top and shadows as best I could and drew a line under the whole exercise. The murky grey brown lighting doesn’t complement the inaccurate greens. The lighting is flat, the arrangement of flowers too literal (what’s going on above the carnations?). Composition, colour, value, lighting — there’s a lot to learn. At least now I know some of the ways not to do it.

Rose hips

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Painted with water soluble oils on paper from a photo taken in the garden. A top tip from Anna Mason’s site is to put a sheet of white card behind the subject when taking the photo. This enables you to assess the composition straight away, and there is no need to do any complicated masking in Photoshop.

The paper is from a 7×5 inch canvas-textured 300gsm acrylic pad (Galeria by Winsor & Newton). I added and extra layer of acrylic gesso with a wide flat house painting brush to further protect the paper from the oils. The texture gives a satisfying resistance to the brush.

Space is a problem where I paint, so by mounting the paper on a board it can be easily propped up on a bookshelf out of the way in between sessions or when waiting for the oils to dry. In this case, the paper was attached to a hardback Tintin book (Explorers on the Moon, since you ask) using masking tape. The masking tape can sometimes rip the surface when removed if pulled off too quickly. I don’t know if this is because I’m using masking tape bought from a DIY shop (is there a low-tack version?) or because the applications of gesso and paint somehow bind the tape to the paper.

The layers of paint on these small sketches are quite thin. In summer it took a few days to be touch dry. I don’t know how long it takes to be fully dry (or should I say ‘cured’), but as I’m not going to be varnishing these, it doesn’t really matter. I’ve read that its best to mount unvarnished paintings behind glass to protect them from dust. Most of my pictures up to now have been drawn in sketch books, but now I need to read up the best way to store these individual paintings.

 

Fire hazard

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Sometimes you’ve got to give in to that urge to get the paints out and mix them all together, just for the joy of it. Compared to acrylics, the water-soluble oils make the blending process very satisfying.

The face was copied from the Katie Sims painting Featherweight, which impressed me greatly when I saw it at a local gallery. I think the face she painted was inspired by another painting in the gallery’s permanent collection.

Once more, with feeling

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I decided to copy the watch a second time to try out some new water soluble oils and to see how they compare with acrylics, using a pad of acrylic paper with an extra layer of white acrylic gesso applied.

Because the paint isn’t dry in 2 minutes (like acrylic) there’s more time to blend and fuss, and it’s easier to make a smoother blend or to tease the paint in to an edge (shadow to left side of watch). I’m not used to the colours in this starter set and had trouble getting a dark grey for the background. I usually get dark neutral colours by mixing an earth colour with ultramarine. With this palette I get a purple by mixing the blue and red, but adding yellow creates brown as it lightens the whole mix. I’ve since ordered more paints to match as close as possible the colours I’m used to, based on my limited watercolour palette.

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Another difference to the quick-drying acrylics was that highlights were unexpectedly difficult to apply as they would dig up darker paint from lower layers (a common beginner’s mistake, apparently). I ended up putting on the gold highlights in an impasto, like icing on a cake.

On the finer details the paint dragged a little. I’ve ordered some water soluble linseed oil and quick drying liquid to loosen it up. I’ve heard that walnut oil is good, but thought I’d stay with the water soluble range for now.

Touch dry within a couple of days (but probably not fully dry).

The linseed oil smell is quite pleasant, and being water soluble the brushes clean up with a bit of washing up liquid and water.

I’ve heard that some people hate water soluble oils and find their consistency unworkable. Others say that they behave like normal oils so long as water is only used for cleaning brushes and not as a solvent during painting. Instead use water soluble linseed oil or other mediums.