Only if the screenprinting stencil is made with care will it meet the high requirements of quality and reproducibility. Glass printers are increasingly standardising to ensure their work meets high quality expectations. In stencil making, the stencil's thickness and the surface roughness are measured in mu m (microns); 1 mu m is 1/1000 mm. A human hair is approximately 60 approx 70 mu m thick and, without aid, the human eye is unable to perceive objects smaller than 40 mu m. Decorative, transparent, or reflecting objects used in glassmaking need extremely precise registration. Even the slightest deviation causes streaks, which are clearly visible when looking through or onto the object. An inaccurate print causes complaints and avoidable cost. This means that all parameters should be standardised and strictly observed during the stencil making.
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