The Builder, Vol. 48: An Illustrated Weekly Magazine for the Architect, Engineer, Archaeologist, Constructor, Sanitary Reformer, and Art-Lover; January to June, 1885 (Classic Reprint) - Softcover

Statham, H. H.

Softcover

ISBN 10: 0260021776 ISBN 13: 9780260021779

Verlag: Forgotten Books, 2017

Inhaltsangabe

Excerpt from The Builder, Vol. 48: An Illustrated Weekly Magazine for the Architect, Engineer, Archaeologist, Constructor, Sanitary Reformer, and Art-Lover; January to June, 1885

It may be useful to add sword as to line drawings for ordinary photolithography, in which mistakes are sometimes made which lead to disappointment. In the first place, consideration should be given to the degree of reduction in size (if any) which is intended. If a large drawing is intended to be reduced, for instance, to one-half or one-third its Original size, lines for shading must not be drawn so close that in the reduction they may tend to run into each other inattention to this often leads to great disappointment in the effect of the lithograph. Spaces which are shaded heavily, unless quite black, should nevertheless be shaded in distinct and clear lines, leaving the interspaces, however small, of untouched white to scribble or scumble over such shadows with thin lines to give more depth, as some draughtsmen do, is fatal to the lithographic effect, and produces only a mess on the plate. It is still supposed by some draughtsmen that drawings must be in black ink for photo-lithography this is a mistake - red, or warm brown, such as sepia, take equally well; but it is important that when black ink is used it should be quite black; thinly-mixed ink gets grey, which is an approach to blue, and fails accordingly. For the same reason, ordinary writing ink, which some people like to use for pen-drawing, and which produces a very pleasing effect in the original drawing, is exceedingly risky for photolithography, and should never be used with that object.

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Details zur Ausgabe

• Verlag: Forgotten Books
• Erscheinungsdatum: 2017
• Sprache: Englisch
• ISBN 10: 0260021776
• ISBN 13: 9780260021779
• Einband: Taschenbuch
• Anzahl der Seiten: 930
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