![]() Drafting films will have a matte finish on one or both sides, which gives the surface "teeth" to accept media or emulsion. Plastic drafting film has been used since the 1940s but was a preferred support from the 1980s through the 2000s. ![]() Courtesy of the Facilities & Services, UIUC, University of Illinois Board of Trustees. Regardless of composition, some people refer to all drafting cloth as drafting linen, or simply "linen."ĭrafting film supports. Drafting cloth fell out of favor in the mid-20th century after the emergence of synthetic drafting film (e.g. Subsequently, blueprinting and similar processes became more popular, as increased translucency enabled more precise photo-reproductions to be struck. Prior to the 1880s, cloths had an off-white or natural color after 1880, a bluish-white tint was common due to a colorant used to increase transparency. Over time, additional oil and plasticizer treatments improved translucency and water-resistance in drafting cloths. The fabric is typically cotton or linen, which has been starched and calendered to create a smooth, glossy drawing surface. Introduced in the 1850s, this flexible, durable alternative to paper was used primarily by architects and engineers for process drawings, tracings, and reprographic prints (e.g. Vellum paper may also be referred to as vegetable vellum or Japanese vellum.īlueprints on drafting cloth exhibiting frayed edges, exposed fibers.ĭrafting cloth is among the most common supports found in 19th and early 20th century architectural and technical drawing collections. From the 1950s to the early 1980s, vellum paper along with polyester film (Mylar) were predominant materials for reproduction-focused prints and drawings, since they were more dimensionally stable than earlier paper or cloth supports. A thin sheet may be transparent enough to enable light-exposed copies to be created from it. ![]() Vellum paper is a modern support chiefly used for tracing technical drawings, plans, and maps. It is semi-translucent relative to its thickness, and it is available in semi-gloss and matte finishes. Vellum paper has an ivory or frosted quality. Over time, plasticizing agents have shifted from oils to resins to composites. Specifically, it is a synthetic paper product made from plasticized wood pulp or cotton fibers. Vellum paper is a stiff or coated semi-transparent paper, not actual animal skin as the name suggests. Courtesy of the Chicago History Museum: Holabird & Root - Chicago Motor Club - Architectural records for buildings by Holabird & Root, 1979.242 ATlot Note the semi-transparent quality of the support. By 1900, rag paper (cotton, linen) had been pushed to specialty markets, and most paper was made from wood pulp. The quality of materials also varied considerably in this period as wood pulp paper emerged as a cheap alternative to rag paper. The late 19th century introduced a wide array of surface textures, opacity, and tints. Semi-translucent tracing paper aided in the professional reproduction of technical drawings before photo-reproductive processes and mechanical and chemical productions began to proliferate in the 1880s. Regardless of the paper’s function, tracing, or printing, the basic composition is often similar. Paper supports of large-scale drawing reproduction will vary to extremes. ![]() See the Paper profile for further information. Here are a few that are typically associated with architectural/technical drawings and reproductions. When we talk about support materials, we are talking about the layer that acts as the carrier for the image material and visual information. Architectural/Technical Drawing Reproduction: Support Materials
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |