Benefit & Limitations or pictorial techniques
A pictorial technique is when you use a device such as a drawing board, CAD (computer aided design) or CAM (computer aided manufacturing). The main aim of a pictorial device is to add you when you are creating and image/object that you or a manufacturer will use to create. You use a pictorial technique when you want to give precise measurements of an object, It may also give a scale (1:2, 3:1) which enables you to see than you need to increase or decrease the size of the object on the paper when in making.
A case study for a pictorial technique is a drawing board which is used to get precise measurements and angles for a diagram which will later be used to create an object, You can create many diagrams using this technique such as Isometric, Oblique drawing which give u all angles and dimensions of the object.
There are many benefits of using a drawing board as a pictorial technique. A benefit for drawing the diagram free hand and without a computer is that you can see what you are doing and how it looks other than if you are using CAD you may not see the whole thing as the computer screen may not be big enough to be able to see the whole design. Another benefit of using a drawing board and paper and pencil is that the design cannot be lost or deletes as it could be on CAD, this means that it will be safe also it means that it is harder for another person/company to steal the idea meaning it’s a great benefit as it cannot be copied and there for unique to the company/manufacture.
Just like the benefits there are limitations to using a drawing board and paper and pencil. One of the big limitations is moving and trying to keep the drawing safe and secure, with the drawing it will be hard to move it from place to place as it is a big piece of paper and you need to make sure that it is not folded over or damages, although you can put in in a portfolio or a rolling tube however even with these they are still quite big and hard to move around unlike CAD which is easy as you can have it on a small memory stick that can fit in a pocket. Also with using a drawing board it is very easy to damage or destroy the diagram as when it is out or being drawn it is liable to have food and drink spilt on it and also for it to be ripped or other object falling and damaging it from shelves ect.. Another Limitation of a drawing board is that it is very hard to store a it is very big and take up a lot of room where as with CAD it takes up little room and memory making it much better and easier to store. Other Limitations include; if you make a mistake you have to rub out leaving marks or have to start again, you must keep sharpening the pencil to make sure it’s always sharp and the line is consistent, takes a lot more time and effort than CAD, you will keep having to changing equipment such as set squares and triangles, and also always having to switch to a roller to get the precise measurement and finally if you need to eat or drink you will have to move out the area to have food or drink which may waste time and may mean you miss the dead like. Another limitation of using a drawing board is not being able to show perspective as with the drawings you are unable to show it in that much detail, this could cause problems as when the project is produced you will not be able to see if the object gets smaller when you look at it and it goes into the distance, unlike with CAD you will be able to show this perspective enabling a better drawing for the user to read off. Also with the engineering drawing you will not be able to see 3D and move it around you just have one image on paper without being able to move it where as if you use CAD you have the ability to move the object to see all dimensions and sides.
The drawing can be improved by using a different type of pictorial technique such as CAD which amends most of the limitations outlines and improves some of the benefits that I have also outlined, however like every pictorial technique it will always have limitation although some will have less than others such as CAD has some of the lowest limitations whereas using a drawing board has the most limitations compared to other pictorial techniques.
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Dominic Clifford
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thank you helped a lot
ReplyDeleteI think you may have lost the point of what a pictorial technique actually is, The technique is the style of projecting the image NOT the method. The benefits, limitations and consequences relate having and actual drawing in front of you, who created the drawing, who is reading the drawing and the consequences if a drawing is incorrectly read or produced
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