TECHNICAL DRAWING
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The document provides an introduction to technical drawing and discusses the difference between technical drawings and artistic drawings. It notes that technical drawings aim to convey technical information to enable manufacturing of an object, while artistic drawings aim to provoke emotions. The document then discusses common drawing materials used for technical drawings such as pencils in various hardness grades and propelling pencils.
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TECHNICAL DRAWING
- 1. UNIT 2: “TECHNICAL DRAWING” 1.- INTRODUCTION. A technical drawing is a form of graphic communication. This type of drawing is used in the transformation of an idea into physical form. The process of creating a technical drawing is called drafting or technical drawing. A person who does drafting is known as a drafter. A technical drawing differs from a common drawing by how it is interpreted. A common drawing can hold many purposes and meanings, while a technical drawing is intended to concisely and clearly communicate all needed specifications of a created object or objects. Difference between technical drawing and artistic drawing: TECNHNICAL DRAWING ARTISTIC DRAWING The page is signed to become responsible The page is signed to become responsible of of the designed object. the artistic value from the picture. Paper sizes are standardized formats. Picture sizes are chosen by the painter. Rules are fulfilled. There are no rules. Technical drawings are only done in Painters usually use many colours. black. Only have one possible interpretation. Have many possible interpretations. Have measurements. Have no measurements. All of the above can be summarized by defining artistic design as "drawing done with the intent or purpose to provoke emotions or feelings", and technical drawing as "drawing that aims to convey technical information about an object to manufacture." 2.- DRAWING MATERIALS. The instruments of drawing are the tools we use to make technical drawings. The most important tools are: - PENCIL. It is a drawing instrument that consist of a cylinder of wood that contains a stick of graphite. According to the hardness of the graphite, the pencil can be classified by a number or by numbers and letters. Look at the table: HARDNESS NUMBERS 0 1 2 3 4 5 6 7 8 9 LETTERS 7B 6B 5B 4B 3B 2B B HB F H 2H 3H 4H 5H 6H 7H 8H Soft Middle Hard Extra-Hard Drawing Pencils are a basic requirement of any graphics course. You need a number
- 2. ranging from 2B to 2H. These letters refer to the hardness of the pencil lead. When sketching, a soft lead such as 2B can be used to produce quick drawings and shading. On the other hand, when drawing precisely a 2H or even a harder pencil such as a 4H is ideal. This type of pencil keeps its sharp edge for longer and produces very fine lines: - PROPELLING PENCIL. It is an instrument of drawing similar to a pen, but it contains a graphite stick like a pencil and it has the same use as a pencil. Refillable pencils A refillable pencil is very useful especially if you are making a drawing that needs a constant thickness of line. The refills are available in a range of thicknesses and in either hard or soft leads. Thickness of line 0.5, 0.7, 0.9, 1.1, 1.3, y 1.6 mm. 010009000003f67601000000d3d4000000001610000026060f002220574d46430100000 000000100258e000000000b00000000200000f8210100f8410100010000006c00000000 0000000000000024010000db00000000000000000000006a2800004a1e000020454d460 0000100f84101000c000000010000000000000000000000000000000005000020030000 c40100001a010000000000000000000000000000e3e306006e4e0400460000002c00000 020000000454d462b014001001c000000100000000210c0db0100000060000000600000 00460000008424000078240000454d462b224004000c000000000000001e4009000c000 00000000000244001000c000000000000003040020010000000040000000000803f2140 07000c0000000000000008400005d0230000c42300000210c0db0100000000000000000 00000000000000000000001000000ffd8ffe000104a46494600010101004800480000ffdb 00430006040506050406060506070706080a100a0a09090a140e0f0c101714181817141 6161a1d251f1a1b231c1616202c20232627292a29191f2d302d283025282928ffdb00430 10707070a080a130a0a13281a161a282828282828282828282828282828282828282828 2828282828282828282828282828282828282828282828282828282828ffc000110800a 500dc03011100021101031101ffc4001c00000202030101000000000000000000000203
- 21. - TECHNICAL PENS (fountain pens). A technical pen is a specialized instrument used to make lines of constant width for architectural, engineering, or technical drawings. It has been also generally called "rapidograph", although that particular name has officially remained a proper name for a line of products made by German company Rotring. It is used for making drawings with ink. 010009000003f62102000000c53c010000001610000026060f002220574d46430 100000000000100ef30000000000f0000000020000064a7010064c70100010000006c00 000000000000000000000c010000b800000000000000000000001a25000078190000204 54d460000010064c701000c000000010000000000000000000000000000000005000020 030000c40100001a010000000000000000000000000000e3e306006e4e0400460000002 c00000020000000454d462b014001001c000000100000000210c0db0100000060000000 6000000046000000581f00004c1f0000454d462b224004000c000000000000001e40090 00c00000000000000244001000c00000000000000304002001000000004000000000080 3f214007000c0000000000000008400005a41e0000981e00000210c0db0100000000000 00000000000000000000000000001000000ffd8ffe000104a46494600010101006400640 000ffdb00430006040506050406060506070706080a100a0a09090a140e0f0c101714181 8171416161a1d251f1a1b231c1616202c20232627292a29191f2d302d283025282928ffd b0043010707070a080a130a0a13281a161a282828282828282828282828282828282828 2828282828282828282828282828282828282828282828282828282828282828ffc0001 10800c1011803011100021101031101ffc4001c00000104030100000000000000000000 00000104050602030807ffc400421000010303020306030406080701000000010002030 4051112210631410713225161718191a1081432b123244252c1d11533627282b2e1f117 2526345392a2c2ffc400190101000301010000000000000000000000000102030405ffc4 0024110101000202010403010101000000000000010211213103041232412251611333 52ffda000c03010002110311003f00ea14020540201008040201008040a8040040201008 0402054088040a811008040201008040201008110050220540201008040203080f74020 1008040a80402010080402054020d4e9436a190e377b1cf07d881ff00e820d8815008110 080402010081100804088040a80402047bdb1c6e7bce1ad1925079af13f68d4f4171348e a9929dc319869e2124a41e5a9eef0b3db0573e5e7fa8d678f691e0bbd53f133aad9df5da17 d3e925d2d434eac93cb4803a7928ff4feabedd26ae12ff47575251b2e55eea9a9cf74c2c6ca ddbcf201c7c55ae565d6d1adb7c375960a9929ebc42f31805ef84e1cc0791730ee07a8c85 79e4e754b8fe9320820107208d88eab4542010081adc6e1456c844d72aca6a3889c07d44 ad8c13ee4a0856f1cf0c388d37ba47e4e0169247cc04dc4ea9fd171159aba56454b74a392 579c363ef435cef669c1288d692dcba201008040208fafaba6a4b951beaea21818f8a5634c b206027319c0cf3e4a2890c838230429020102a0440201008040204402044020102a010 33bbbcb2db50e1b1d3854ceeb1a9c66eb973898c955c657031b1f2112e30c6ea3b01e4b8 63af1e9e8dd9a554b699aae6aca2ae6472b99a1c299ee1800f90f557fd32bfd5c5d72a7ba7