gloss metals gold GBC 782B

Item No. GOLD GBC 782B
General information The liquid bright precious metals and lustre colours are supplied ready for use. Further dilution is not recommended.
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CHF 49.90
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Description

General information

The liquid bright precious metals and lustre colours are supplied ready for use. Further dilution is not recommended.

Before use

  • The preparations must be shaken well before use.

  • The bottle spout should be clean before pouring.

  • It is recommended not to pour more than what can be used in 30 minutes. The viscosity of the preparation is increased as soon as it is in contact with the air.

  • If the preparations become too viscous, 1-2 drops (Art. No. V 0.1608) can be made ready for use again with the dilution oil.

application

  • The goods to be decorated must be clean, dry and dust-free.

  • The goods should not be touched with greasy hands.

  • Depositing dust on a decoration that is still damp can lead to surface defects after firing.

  • Brushes with soft bristles should be used. Hard bristles can leave brush marks after the fire. A flat bowl is recommended to facilitate the acquisition of the preparations.

  • The brush should never be dipped directly into the bottle, as dust could easily penetrate.

  • The brush is dipped and the excess paint is stripped off. The application should be done with as few brush strokes as possible. The width of the brush should be selected according to the type of object.

  • The brushes can be cleaned with turpentine or with dilution oil (Art. No. V 0.1608). If turpentine is used for cleaning, it is recommended to wash the brush in methylated spirits afterwards.

burning

  • The precious metals and luster colors must be burned in with good ventilation. Between 300 and 400°C, the organic oils and resinous materials used as carriers release vapours during combustion. These vapours must be removed from the environment during firing so that the gloss of the fired metal film is not impaired.

  • The object should not be placed in the oven at high temperatures, otherwise there is a risk of blistering or fogging.

  • The object is fired between 750 and 800°C.

The firing curve must be adjusted according to the type of body. Stoneware shards and stoneware shards should be heated at 50°C per hour. A porcelain shard can be fired faster.

reference

The Bodmer samples were fired at maximum temperature with a firing cycle of 420 minutes to 770°C and a holding time of 10 minutes. The samples consist of a C19 body glazed with Art. No. 51.012 white glossy or Art. No. 82.230 transparent matt.

To obtain a glossy result, the decor must be applied to a fired glossy glaze base. The firing result depends on the quality of the underlying glaze.

Sources of error:

  • Matt film or fogging: too much burning or poor oven ventilation

  • Chandelier film rolled up, purple colouring: attack by vapours

  • Cracks in the fired film: resin cracks temperature rise too quickly. Combustion cracks Maximum temperature too high or heating power too high

  • pinholes/ blemishes: dust in wet film, wrong product selection

  • Dull or crystalline appearance of the decorative film: Too strong application, too strongly fired film or wrong product choice

Poor adhesion: Insufficient firing, application too thick, attack by fumes, incorrect product selection



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