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Painting and Palette Knives
Palette knives:-
have a solid blade from handle to tip and the tang/tongue (insert)
should extend
completely through the handle. The blade is usually forged steel, flexible and blunt. The handle is made of hardwood and the blade is
usually straight. They are designed to be used for mixing paint and cleaning the palette.

Painting knives:-
traditionally have a narrow cranked arm to the blade as shown in the examples left, this allows them to be
flexible, light in weight and helps to keep the knuckles of the hand, out of the paint when in use. There are
others that have a straight solid blade; these generally have an angled square end to the blade.
The blade is forged steel tempered along its full length giving flexible stiffness, with the tang extending
through the handle.
The edges of the blade should not be too sharp, a blunt,
smooth edge is often the easiest to work with, if it appears too sharp,
dull/blunt it by rubbing on fine 'wet and dry' emery paper. A sharp edge can damage the primed surface of the
canvas and even cut into the fabric.
Test the blade by
picking paint up from a palette, it should cut through and lift the paint with a
smooth feel against the palette.

Painting knives come in a variety of shapes and sizes, the knives shown to the right
are pear shaped and trowel shaped. When first starting to paint with a knife, the trowel shape is probably the
best to choose as it is a useful shape and easy to handle. Think of it 'like spreading jam onto bread and
butter'.
Applying oil paint using a Painting knife:- Painting knives
are used for applying paint to canvas, especially where an
impasto
effect or texture is required, also very useful where a straight edge is needed or a
sharply defined line. It is best to keep the knife clean between
applications of paint this helps to reduce the muddying of the colours. Paint
applied without too much mixing is very effective.
As
shown left, more than one colour can be added to the knife, this can be especially useful where large sweeps are
colour are needed - an expanse of flat water for instance or the side of a building. Practice different ways of
loading the knife and different actions when applying the paint. Try and develop a
light touch when applying the paint, too much pressure and the paint will be removed as fast as you try to apply
it.
Would you consider that using a Painting knife has anything to do with the 'Building trade'? As with all things,
there are good builders and not so good builders, but if you have the opportunity to watch a skilled
craftsperson laying bricks or plastering a wall their expertise and dexterity with the tools of their trade are
what you are after with the tools of yours!
They know just how much wet mortar to place between the bricks and then the important angle and pressure of the
trowel needed to give the correct finish when the mortar is dry. The plasterer, having applied the wet plaster
to the wall knows how to angle and sweep his 'float' to give the correct depth of plaster and smooth finish to
the work, rough bits and cracks only showing up when it's dry!
Using a painting knife you are building up layers of paint; make sure your building stands
the test of time.
Painting knives!
All
manner of other useful types of blades can be tried, a wide selection
can be found in the 'clay modelling' section of an art shop, from
spatulas to wire tools. Try experimenting with household tools you have on
hand, the main thing to remember is that the edge of the blade needs to
be blunt, otherwise there is the risk of cutting the
canvas. Have fun and enjoy.
There is a Free E-Book available on
my personal site at Art-E-Books
Oil Paint
Painting mediums
Palettes
Techniques Colour mixing
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