non-drying modelling clay made from wax, fillers and pigments, can be worked with from 15 C° to 25 °C, tear-proof, polishes up well, odorless, homogenized (no air bubbles), forms hard surface and stable edges, pre-heating temperature: 55 °C to 60 °C, density is 1.45 g/cm³
Mars Clay, our standard clay, comes from one of the largest clay suppliers for the European automobile industry. In comparison to Tec Clay, this standard clay is heavier but also considerably less expensive (the volumes of the bars are the same for both products, the density, however, is of course different).
Mars Clay exhibits a high degree of consistency in terms of colour hue and plasticity. This material, which has stable edges and contour accuracy, does not dry out on the surface and therefore does not crack. It is therefore also possible to change a model even after a number of years by applying more clay in order to achieve the desired shape.
The clay when warmed adheres extremely well to base materials like wood or POLYSTYRENE FOAM and can be worked on at room temperature by hand or with a milling machine with good success. Even though the manufacturer says that models made from Mars Clay can allow moulds using PLASTER, SILICONE and POLYESTER to be taken from their surfaces, we recommend that when using silicone (ONLY condensation-crosslinked silicone) a trial run should definitely be made first in order to avoid inhibition problems.
Among professional model makers the English term “Clay” refers to a special modelling material that will not dry out in the air and which can be machined at room temperature (15 °C to 25 °C). Clay (sometimes called Design Clay), then, is primarily used in the automobile industry for designing auto bodies. In order to keep costs and the weight of the model low, the rough shape made with the clay is transferred onto a base body made from RIGID FOAM (e.g. polystyrene foam) or wood. In the process, the clay, which is relatively hard at 20 °C, is pre-warmed in an oven heated to, depending on the clay, 50 °C to 65 °C so that it will become more pliable and easier to apply on the model.
After the applied clay has cooled off and thereby become hard again, it can, unlike normal plastiline, be machined. The desired shape is then slowly arrived at by means of grating or scratching. In industry, this work is done by a computer driven milling machine whereby the surface of the model is subsequently scanned again and retraced according to the CAD data. If too much material has been removed, warmed clay can be added to the surface after it too has been warmed by means of a hot-air gun.
In the automobile industry, finished model studies are usually overlain with very special films or paints so as to give the look of painted coachwork. If necessary, these special coatings can be removed in order to make any later changes in the shape. Modulor does not yet have these special materials in its product range - clay surfaces, however, can be also successfully treated with TONING PIGMENT or RESIN-DISPERSION INTERIOR PAINT.
Argilla Mars Clay standard, marrone
medium hard, 2300 g, double bars (61 x 120 x 235)
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