Clay & Ceramic Colours - Cafe colours application

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Transcript of Clay & Ceramic Colours - Cafe colours application

  1. 1. Chrysanthos Caf Colours application process and decorating techniques short manual version by Christine Dehn
  2. 2. Caf Colours What are they? Caf Colours are primarily underglazes designed to be applied under neath the glaze onto a clay body or bisque surface (fired clay body), and then fired in a kiln to maturity e.g. 1080 degrees Celsius, depending on manufacturers recommendations and the type of clay used. Although as you will discover there are some exceptions
  3. 3. Caf Colours 1 2 3 General Application Process Opaque and Soft finish Caf colours are ideal for both an opaque finish (full cover of colour 3 coats) and a Translucent wash (transparent see through finish 1 coat). Depending on the surface area that you wish to paint it is generally a good idea to use the appropriate size brush for that area. For example when you are applying colour to a large area, it is recommended that a large mop or soft glaze brush be used to apply the paint. Soft glaze or mop brushes are ideal as they will give both an even and soft smooth cover and finish (see images 1 & 3). Whereas a bristle brush can create texture and Transfer Design
  4. 4. Caf Colours Application Techniques (1) Full cover An all over cover or opaque finish can be achieved with either a mop or soft glaze Brush. Shake or stir the paint before hand, then fully load the brush with colour, and apply a generous coat to the surface of the ware. Three coats should be applied in total. Allow each coat to semi-dry before proceeding to the next. Ideally it is recommended that a cross-hatch' technique is applied when wishing to achieve a near flawless finish. Application Techniques (2) Another method used to create an even-flawless finish, is with an air gun. The aim was to spray a light coat of colour mixed with water, and with the aid of an air gun and compressor the paint was sprayed evenly and effortlessly onto the surface of the ware, giving a flawless soft finish. This method is often still practiced in the commercial ceramics industry achieving quick and favorable results. Safety precautions must be followed and it is not recommended to be practiced by pregnant women. Application Techniques (3) The Sponge Technique is a favorable technique or application method used by first time ceramic painters, as its easy, and achieves good, interesting and favorable results. Using either 1 colour or several different colours, the colour is applied using a soft sea sponge. The sponge is dipped into the colour and then applied to the surface of the ware using a pouncing motion for an even colour application. Opaque finishes
  5. 5. Caf Colours the wash transparent technique A transparent or translucent finish can be achieved via applying 1 coat only of the Caf Colours, to create this effect. If a wash or very pastel watery effect is desired then apply large amounts of water, or more than usual to the colour and mix to a watery consistency. Using a relatively large soft, round or square shader brush (depending on the surface area to be covered), allow the brush to soak or be saturated with the pre-mixed colour, then apply to the ware, taking extra care not to create any unwanted runs or bleeding of the colour. This could take some practice and its a good idea to practice this method beforehand on some unwanted clay or bisque ware. If working on a piece such as a vase, it would be advisable to lay it flat whilst applying this watery paint to the surface. Wash technique on Crystallite Glaze
  6. 6. Caf Colours Sponge Stencil work & Stamping For this step most soft sponges like a sea sponges, make ideal shapes, templates or stencils. With a scissors cut the sponge into the shape you wish to create. Apply desired colour to a tile, mix with a little water to create a smooth cream consistency. Dip the sponge into the colour, making sure the entire surface of the shape is saturated in colour, then gently place the sponge onto the bisque surface area and lightly with your finger press the sponge into the ware. Remove the sponge carefully by gently peeling the sponge off. Sponge Overall cover As mentioned earlier, The Sponge Technique is a favorable technique or application method used by first time ceramic painters, as its easy, and achieves good, interesting and favorable results. Using either 1 colour or several different colours, the colour is applied using a soft sea sponge. Apply 1 or more colours onto a tile mix each colour with a little water, but do not allow the colours to mix into one another. Dip the sponge into the colour(s) and then apply to the surface of the ware using a pouncing motion for an even colour application. Cover the entire area with colour creating a smooth yet textured finish.
  7. 7. Caf Colours Bubbling Effect For this step add to a tall container a little water, a drop of detergent and some colour. Place the item on a turn table or banding wheel for easier application. Stir the mixture and with a straw begin to blow creating soapy bubbles. Then either scoop or allow these soapy bubbles to fall onto your item, beware of runs. Add more or other colours, if desired and continue until happy with the result. Allow item to thoroughly dry before glazing. This technique is very popular with children. Splatter & Stipple Fairly straight forward and simple task of either splattering or stippling colour onto your ware. This can be achieved with either a toothbrush or hard bristle brush. Apply your chosen colour(s) to a tile and add water only if necessary. Saturate your brush with colour and with your finger brush gently against the brush flicking colour onto your ware. Again be aware of too much colour or water on your brush, which could result in runs or too much splatter. For best results start with very little colour and gradually build up.
  8. 8. Caf Colours Banding This can be a tough technique to attempt for the first time. But with practice, you will make perfect. Place item on to a banding or potters wheel. Mix colour to a milky like consistency so the colour will freely cover the area. Using a soft large glaze or mop brush saturate the brush with colour and whilst turning your item on the wheel apply the colour. Many coats will be required to achieve a good even opaque finish. Sgraffito This method is fairly simple but needs to be done soon after the last coat has been applied and allowed to dry a little, as this could cause the paint to crack or split if too dry. Using a skewer or stylus made of wood or metal, begin carving or incising into the top colour to reveal the original clay body underneath. Once completed brush away the dust particles from the sgraffito with a bristle brush. This is very important prior to glazing. Creating a banding effect with a` banding or potters wheel Using a wooden or metal skewer and incising or carving through the surface to reveal the clay or colour underneath Samples of sgraffito
  9. 9. Caf Colours Brushwork & handpainting Detail & line work For opaque finish apply 2 to 3 generous coats, allowing each coat to dry in between. Apply a small amount of colour to a tile and mix with water to an ink like consistency. With a detail or fine liner brush apply 1 coat using the tip of the brush. The brush should be washed in water frequently and re-loaded with colour often for a best results.
  10. 10. Caf Colours Majolica The method to paint Caf Colours over a white non-moving glaze. Once fired a soft pastel finish is achieved, as with the famous Italian glaze decorations. Although its a fairly straight forward and simple technique, it may take a few practice runs before accomplishing the desired result. Apply 3 coats of white non-moving (White Superior Glaze), to the bisque ware and allow to dry thoroughly before applying any colour. Applying colour is similar as to a wash or transparent finish. Add more water to the colours than usual and mix thoroughly. With a soft round brush apply the colour to the glazed surface. Taking care not to create any colour bleeds or runs, blot with tissue paper if this occurs and add more colour to the mix. Satin Cafe To create a satin or low sheen finish to your ware, refer back to the earlier notes in regards to full cover or opaque finish. Adding 3 generous coats to your ware and firing as recommended by the glaze manufacturer.e.g. 1000O C and soak time for approx 30-40 minutes, although a test should be done before hand to achieve best results. Generally this technique will not render your items to be food safe, but the overall result is striking..
  11. 11. Caf Colours Final Notes Antiquing This is one of the simplest and fun techniques to try on ceramics. Although there is one problem, you need an item with texture or raised surfaces like the one in the image left. Transparent glazes will give the best result simply by applying to a textured item, or... Apply chosen colour to a tile and add water (more than usual) and mix. With a soft glaze brush apply the colour to the ware, taking care to fill colour into any gaps or crevices. Using a barely damp sponge wipe away colour from the ware until you reach the desired effect. Wash your sponge frequently to avoid a muddy finish. It is always advisable to add a little Water or brushing medium to the Caf Colours prior to painting . A few drops and mix well onto a tile or palette, will help with a better finish. Avoid dipping the brush into the paint container as this could promote contamination. Allow each coat to dry in between applications. Use appropriate size brush for the surface area for good even results. Always clean brushes in warm soapy water and allow to dry bristle/ferrule of brush standing up. For a gloss finish, glaze items either with dipping or brush on glaze and fire. For satin finish fire item to 1000o C and allow to soak for approximately 30-40 minutes for best results (follow glaze/firing recommendations b