[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-648566-105":59,"doc-detail-648566-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","fundamentals-of-drafting-oblique-projection-principles-scales-and-drawing-techniques","Fundamentals of Drafting - Oblique Projection - Principles, Scales, and Drawing Techniques","","Fundamentals of Drafting - Oblique Projection explains how to construct pictorial oblique views by projecting parallel projectors obliquely onto a plane with the object face kept parallel to that plane. The material distinguishes cavalier and cabinet projections using full, half, and three-quarter receding-axis scales, and discusses how reduced scale or positioning choices lessen distortion. It also covers arranging faces and circular-arc contours to save drawing time, followed by beginner-oriented steps and core drawing rules such as omitting hidden and centre lines when not required.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/fundamentals-of-drafting-oblique-projection-principles-scales-and-drawing-techniques/648566/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/fundamentals-of-drafting-oblique-projection-principles-scales-and-drawing-techniques/648566.png","ImageObject",300,407,{"name":92,"@type":93},"jayni","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-10-23",true,{"@type":102,"interactionType":103,"userInteractionCount":34},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is oblique projection and how is it constructed conceptually?","Question",{"text":112,"@type":113},"Oblique projection produces a pictorial view using parallel projectors that are oblique to the projection plane, with the object positioned so a face is parallel to that plane.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How do cavalier and cabinet projections differ?",{"text":117,"@type":113},"Cavalier projection uses full size on the receding axis, while cabinet projection uses half full size. Three-quarter full size uses no specific term in the provided material.",{"name":119,"@type":110,"acceptedAnswer":120},"What methods help minimise distortion when positioning an oblique view?",{"text":121,"@type":113},"Minimise distortion by using a reduced scale for receding lines and by positioning rules such as placing the longest dimension parallel to the projection plane and placing circular/arc-containing faces parallel to the projection plane.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},648566,1792891154,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":34,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":29,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144},3985747859343,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Fundamentals of Drafting-Oblique Projection  \nObjectives:  \n1. To distinguish between cavalier projection and cabinet projection.  \n2. To illustrate the principle of oblique projection for rectilinear objects and curved objects.  \n3. To draw oblique views from given orthographic projection drawings  \nDefining oblique projection  \nOblique projection is a method of producing a pictorial view of an object. The projectors from the object to the projected plane are parallel but oblique to the plane, and the object is positioned with a face parallel to the plane.  \nExample  \nThe object in orthographic projection  \nThe object in oblique projection  \nOblique projection with reduced scale  \nConsidering a cube with the receding lines drawn with scales of full size, 3/4 full size and 1/2 full size respectively,  \nit is noted that the distortion is less apparent when the scale on the receding axis is reduced. The views drawn are still true projection whatever the scale used on the receding axis, since the scale may be changed merely by altering the angle which the projectors make with the projection plane.  \nCommon scales used for the receding axis:  \ni) full size, then the view so drawn is called cavalier projection  \nii) half full size, then the view so drawn is called cabinet projection  \niii) three quarter full size, no specific term is applied to  \nPositioning of view  \nWhen making an oblique projection, the following factors should be considered:  \ni) faces of the object to be shown  \nii) keeping distortion to a minimum  \niii) saving time General rules:  \ni) variation of angle of receding axis to show the appropriate faces  \nii) placing the longest dimension of the object parallel to the projection plane  \niii) placing the face of the object containing circles or arcs parallel to the projection plane  \nVariation of angle of receding axis  \nOblique projection of an object can be made showing different faces by altering the angle which the receding axis makes with the horizontal. The variation of angle of receding axis can be denoted by three axis: two are drawn at right angle while the third is at any angle to the horizontal.  \nComparing these variations of angle of receding axis , the face which parallel to the projection plane is always visible. The other two faces of the oblique projection depend on the variation of the angle of the receding axis.  \nMinimising distortion in positioning  \nOne of the ways to minimise distortion of an oblique view is to use a reduced scale for the receding lines. There are still two other methods that can be observed to avoid distortion:  \n\n| i) | place the longest dimension of the object parallel to the projection plane\u003Cbr>comparing two angle bars of equal length positioned differently | |\n| --- | --- | --- |\n| ii) | place the face of the object containing circles or arcs parallel to the projection plane\u003Cbr>comparing two hollow cylinders of equal size positioned differently | |\n\nWhen the above two methods are in conflict, it is recommended that the long objects take the precedence over the objects with circular cross-section.  \nTime factor in positioning of view  \nObjects with contours formed by circular arcs or irregular curves are to be positioned parallel to the projection plane. This can save drawing time because the circular curves can be drawn with a pair of compasses and the irregular curves can be produced in their true size and shape as in the orthographic view.  \nBasic drawing techniques  \nSimilar to most pictorial projections, the general rules for constructing an oblique projection are:  \ni) suitable only for relatively simple objects  \nii) hidden lines are omitted, unless they are necessary  \niii) centre lines are omitted, unless required for dimensioning  \nFor beginners, it is advisable to follow the steps described below:  \ni) visualise the objects  \nii) identify the positioning of the oblique projection by considering  \n1. variation of angle of receding axis  \n2. minimising view dist","cbCait3CpqEGaH8y","https://ap.wps.com/l/cbCait3CpqEGaH8y","pdf",282083,"English","# Objectives\n# Defining Oblique Projection\n## Example and Reduced Scale\n# Common Scales for the Receding Axis\n# Positioning of View\n## General Rules\n## Variation of Angle of Receding Axis\n## Minimising Distortion in Positioning\n## Time Factor in Positioning\n# Basic Drawing Techniques\n## Beginner Steps\n# Drawing Techniques\n## Cavalier Projection\n## Cabinet Projection\n## Circular Features","[{\"question\":\"What is oblique projection and how is it constructed conceptually?\",\"answer\":\"Oblique projection produces a pictorial view using parallel projectors that are oblique to the projection plane, with the object positioned so a face is parallel to that plane.\"},{\"question\":\"How do cavalier and cabinet projections differ?\",\"answer\":\"Cavalier projection uses full size on the receding axis, while cabinet projection uses half full size. Three-quarter full size uses no specific term in the provided material.\"},{\"question\":\"What methods help minimise distortion when positioning an oblique view?\",\"answer\":\"Minimise distortion by using a reduced scale for receding lines and by positioning rules such as placing the longest dimension parallel to the projection plane and placing circular/arc-containing faces parallel to the projection plane.\"}]","Fundamentals of Drafting - Oblique Projection - Principles, Scales, and Drawing Techniques | PDF",1792794057,15]