When using orthographic views, it can be difficult to get a clear picture of how the various views fit together to form the final part. I would say the main disadvantage of an isometric drawing is that it can be cluttered more easily than orthographic views. You can use an isometric design to show dimensions, callouts, etc. normally shown in an orthographic drawing, but if you don't pay attention to their placement, the drawing can get incredibly messy. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay This is the advantage of orthographic drawings, that you can split the technical information between different views so that no single view becomes too cluttered. Overall I would say that if you are dealing strictly with engineers or technicians, for example machinists, then orthographic views are probably sufficient. They are used to seeing them so interpretation will not be a problem. If you are dealing with non-technical people, for example in the purchasing industry, then you may want to use isometric. It will be easier for them to have a better vision of what you are looking for. In the vise jaw shown in figure 1 there are multiple views shown, from the views you can interpret how each side should look and the dimensions of the product you are making from the drawings. There are many advantages to using a drawing board as a painting technique. An advantage of drawing a particular component freehand and without a computer is that you can watch what you are doing and the entire drawing will appear to scale, however if you are using CAD you may not see the entire component as the computer screen may not. be large enough to see the entire design otherwise the scale may not be accurate meaning the product dimensions will be distorted on your computer screen. Another benefit of using a drawing board, paper and pencil is that the drawing cannot be lost or erased by mistake as it might be on CAD, this means it will be a hard copy so it is more difficult for another person /company steals the idea. This could be a problem especially if the design is not patented. This is a great advantage as it is exclusive to the company/manufacturer. Just like the benefits, there are limitations to using a drawing board, paper, and pencil. One of the big limitations is moving and trying to keep the design safe and secure. With the drawing it is difficult to move it to different positions as it is a large piece of paper/separate pieces of paper and you have to make sure it doesn't have any bent creases or damage. To combat this you can put it in a portfolio or rolling tube, however even with these they are still quite large and difficult to move around unlike CAD which is easy as you can have it as a file on a small memory stick which can be easily transferred. CAD designs can also be copied and shared across multiple devices, which is useful if the CAD design is constantly being modified and innovated by multiple designers, which is likely. This is also a limitation as the file could be copied and stolen by someone. Another limitation of a drawing board is that it is very difficult to archive because it is very large and takes up a lot of space whereas with CAD it takes up little space and memory which makes it much better and easier to archive. Other limitations include; if you make a mistake you have to erase it, which could potentially leave marks or have to start over. You may also need to keep sharpening your pencil to make sure it stays sharp.