Drafting linen

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Very old drafting linen Olaf Boye Plumbing Plan February 1889.jpg
Very old drafting linen

From the late 19th century until the middle of the 20th century, drafting linen, also known as drafting cloth, was commonly used as an alternative to wood-pulp and rag papers in creating technical drawings. Its major benefits were considerable strength, especially in erasing and redrawing, durability in handling, and translucency for making multiple reprographic prints. Manufactured as an undyed muslin woven fabric, typically using cotton or linen fiber, the textile was highly starched and then calendered to create a smooth surface for precise ink and graphite lines. Although drafting linen was most typically used in creating original drawings, it was occasionally used as the underlying support for blueprints and other similar reprographic processes. Drafting linen largely fell out of favor after the development of drafting film — varying in chemical composition from cellulose acetate to polyester—in the 1950s.

Technical drawing creation of standards and the technical drawings

Technical drawing, drafting or drawing, is the act and discipline of composing drawings that visually communicate how something functions or is constructed.

Architectural reprography, the reprography of architectural drawings, covers a variety of technologies, media, and supports typically used to make multiple copies of original technical drawings and related records created by architects, landscape architects, engineers, surveyors, mapmakers and other professionals in building and engineering trades.

Muslin fine white cotton fabric, originally made in India

Muslin, also mousseline or Malmal, is a cotton fabric of plain weave. It is made in a wide range of weights from delicate sheers to coarse sheeting. Muslins were imported into Europe from Bengal during much of the 17th and 18th centuries and were later manufactured in Scotland and England. While English-speakers call it muslin because Europeans believed it originated in the Iraqi city of Mosul, its origins are now thought to have been farther east — in particular Dhaka, the capital of what is now Bangladesh. Dhaka’s jamdani muslin, with its distinctive patterns woven in layer by layer, was one of the Mughal Empire’s most prestigious and lucrative exports. Early muslin was handwoven of uncommonly delicate handspun yarn.

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Blueprint document reproduction produced by using a contact print process on light-sensitive sheets

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The following outline is provided as an overview of and typical guide to drawing and drawings:

Drafting film is a sturdier and more dimensionally stable substitute for drafting paper sometimes used for technical drawings, especially architectural drawings, and for art layout drawings, replacing drafting linen for these purposes. Nowadays it is almost invariably made of transparent biaxially oriented polyethylene terephthalate, which should last several centuries under normal storage conditions, with one or two translucent matte surfaces provided by a coating. However, some older drafting films are cellulose acetate, which degrades in only a few decades due to the vinegar syndrome. Uncoated films are preferred for archival, because there is then no possibility that the coating material could deteriorate over time or react with other materials.

References

Lowell, W. & Nelb, T. R. (2006). Architectural Records: managing design and construction records. Chicago: Society of American Archivists.