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Since lumber costs increase rapidly with increasing board thickness, some manufacturers may reduce frame costs by skimping at the precise point where ample strength is most important. The engineering principle involved is that strength varies directly with rail width and with the cube of thickness.
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Engineered wood products can be stronger than hardwood because layering methods increase the strength. They are sometimes used at critical stress areas when maximum strength is needed. Modern furniture making, however, tends to rely upon a combination of engineered woods and solid woods in frame
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If we assume that a certain 1" x 1" beam will sustain a load of 100 pounds, then a beam 1" thick and 2" wide will sustain 200 pounds. An old rule of thumb suggests that rails of 3" or more in width should be 1 1/8" thick, while rails less than 3" wide should exceed 11/8" in thickness.
88:. The frame may be a basic piece of wooden furniture before it is upholstered. Like a finished piece of furniture before the upholstering, the frame establishes the final quality, including its durability, and limits the final design, padding, cushioning, or cover.
178:. In Scandinavia, better quality softwoods are available and used with suitable furniture-making and upholstery techniques; their use is more common in furniture of various qualities.
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is an acceptable framing wood. Softwoods can make poor frames but are used in low-end furniture manufacturing, particularly with partially upholstered frames on larger pieces in the
131:. The type of wood depends upon the final piece, including function, style, and quality. Where parts of the frame are visible afterward, wood grades and species may be mixed.
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all have acceptable combinations of strength, availability (country dependent), workability, and cost to be superior wood products for frame making.
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Wooden frame joints are often double doweled, so round wooden pegs are fitted into holes in two adjacent frame sections and glued.
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If the information is appropriate for the lead of the article, this information should also be included in the body of the article.
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are also commonly used. The gang nail is a metal plate with saw teeth, immobilizing the joint when pressed into the wood with a
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238:. Major joints need the additional support of corner blocks, which should be glued and screwed into place.
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panel inserted into them as a backer for the upholstery and to allow these staples to be pinned into it.
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123:, or a mixture of these. Solid wood for upholstery frames may be of various kinds, including
287:. U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. Archived from
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of a piece of furniture gives the structural support and determines the basic shape of the
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making. Engineered wood products commonly used in furniture making include
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138:. Hardwood frames for high-end furniture are often constructed from
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contains information that is not included elsewhere in the article
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Denig, Joseph; Eugene M. Wengert; William T. Simpson (2000).
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Rix, Joachim; Haas, Stefan; Teixeira, José, eds. (1995).
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Hardwood destined for upholstery frames is primarily
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206:, and so metal frames will typically have a
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319:. Guild of Master Craftsman Publications.
202:. Upholstery itself is often applied with
111:Frames are made variously of solid wood,
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317:Upholstery: A Complete Course
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200:medium-density fiberboard
282:"Drying hardwood lumber"
115:products, a variety of
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315:James, David (1999).
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86:upholstered furniture
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257:Virtual Prototyping
170:are good, and hard
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326:978-1-86108-118-6
142:mixed hardwoods.
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296:. Retrieved
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259:. Springer.
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218:Construction
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168:American elm
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44:October 2022
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32:lead section
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71:Upholsterer
347:Upholstery
341:Categories
298:2008-06-08
242:References
232:gang nails
140:kiln-dried
352:Furniture
196:chipboard
192:millboard
188:hardboard
160:White oak
152:white ash
136:air-dried
129:softwoods
125:hardwoods
92:Materials
156:mahogany
117:polymers
228:staples
226:coated
208:plywood
204:staples
184:plywood
164:red oak
107:in 1935
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198:, and
166:, and
154:, and
121:metals
80:, the
292:(PDF)
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224:Epoxy
172:maple
148:birch
144:Beech
321:ISBN
261:ISBN
230:and
127:and
119:and
105:DalĂ
101:Sofa
76:In
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