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3D desing and printing (Standardisation (The purpose of standardisation in…
3D desing and printing
Sketch
A sketch is a quick drawing that transmits the general idea of an object or concept. Sketches are always done freehand. They do not have dimmensions written on them and we do not have to draw them to scale or use a desing sheet.
Diagram
A diagram is more detailed then a sketch. It is also done freehand but more detailedis added and it includes the views of th object. They must in proportion to the actual size of the object and they must include all neccessary notes to complete the information about the drawing.
Technical drawing
The final drawing is called a technical drawing and it is done using a ruler. Technical drawing indicate all the details of the object. We do them in pencil and then go over them witha fine-line pen.
Measuring lengths
When we do a drawing we have to include real measurements of the object we are representing. This means that we need to be clear about how the standard unit is broken down into its decimal multiples and sub-multiples, and vice versa.
Standardisation
The purpose of standardisation in to draw up a series of technical specifications that companies can choose to follow as a benchmark for testing the quality and safety of their activities and products.
Standardisation is the set of standards that regulates every element of technical drawing. These standards are agreed by agencies. In Spain, this agency is called AENOR and the standards that it creates are called UNE, which is an abbreviation of “una norma española. UNE standards are very similar to the international standards, which are called ISO.
Dimensioning
· Dimension lines¨: These are used to indicate measurements and are drawn parallel to the line that they measure.
· Auxiliary dimension lines: These lines protrude about 2 mm and are used to delimit the dimension lines accurately. They must be at least 8 mm from the edge of the figure.
· Dimension line end points (arrowheads, dots or lines): If there is space, 15° arrowheads are added to the ends; otherwise, 45° lines or dots are used.
· Numbers: These should be standardised and expressed in mm (if another unit is used, it must be indicated).
Views
· Front elevation: It is the main primary view; it is always the most representative face of the object. We can indicate it with an arrow.
· Plan: It is the view of the figure from overhead.
· Left or right elevation: It is the view from the left- or right-hand side of the figure.
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3D printing process
- Design: First of all, we design the part that we want to print. We can use any graphic design program for this, including SketchUp, Tinkercad...Slicing
- Slicing: programs translate the STL file into GCODE format, which is the format that the printer understands.
- Printin:The GCODE file generated during slicing is copied to a memory card that is inserted in the 3D printer. Alternatively, we can use a cable to connect the computer to the printer and send the file this way.
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Preparing the printer
1.If we want to connect the printer directly to our computer, we will need to install the drivers.
2.After this, we need to download the slicing and control software and follow the steps during installation.
3.We then need to load the print parameters in Repetier-Host.
4.Lastly, configure Repetier-Host with the printer parameters provided by the manufacturer.
