How are the lines portrayed in parallel projection?
parallel to the surface and perpendicular to each other
parallel to each other and perpendicular to the surface
Why is 3D printing defined "additive manufacturing"?
Because it adds successive layers of materials to create a final product.
Describe the process of 3D printing an object.
Design bluepring -> Send BP to printer -> Plastic string is introduced in the dispenser -> plastic string melts -> p. deposited on the plate -> p. cools down
What is the projection technique?
It's a technique used to represent three dimensional objects on a 2 dimensional surface.
There can be more than 1 vanishing point in centra projection.
NOOOOO
YESSSSS
Ortographic, oblique and axonometric are types of...
Parallel projection
How has 3D printing changed in the last years?
The process' quality and quantity have been improved; mew materials can be used to print; 3D printers are now cheaper.
Which modelling technique is used in automotive industry to elaborate the metal panels of a car?
Surfacing :)
What is CAD?
CAD is a type of software used by designers for precision technical drawings.
What are the 2 most important projections in the projection technique?
Parallel projection and central projection
Give a definition of 3D-Model.
It's a three dimensional representation (or part of that) of an object, which provide real life representations of a design showing its composition.
The process of developing a multi-faceted surface using specialized software is called...
Solid modelling
What's a freehand sketch?
It's the starting point of every technical drawing.
What are the two main strategies for creating models?
Top-down and bottom-up technique
What is mechanical drawing?
It is a type of technical drawing that shows information about an object or a building.
List at least 4 basic tools used for technical drawing.
Paper, mechanical pencil, drafting table, set square or T-square, compass, protractor...
What is CIM?
Computer-integrated manufacturing is software that connects individual stages of manufacturing, from drawing to the quality control of an item.
Mention one benefit of solid modelling!
if you change one dimension, the remaining ones will change accordingly!
What industries make use of 3D printing?
Healthcare, movie props, prosthetics, architecture...
How must the info in mechanical drawing be?
As it must give specific information, it must be precise, accurate and understandable.
What are popular software used for solid modelling?
SolidWorks, Autodesk Inventor, Pro/Engineer and Catia
Can you list 4 geometric elements of a plane figure?
Points, lines, angles and curves.
Why is solid modelling a parametric technique?
Because it uses parameters such as dimensions or material density to create a model.
Types of lines are defined by...
Width, shape and length
Thickness, length and width
thickness, width and shape
Shape, width and length
Which materials can be used for 3D printing?
Plastic, metals, organic materials...
What is CAM?
CAM software deals with automated production process. Starting from a CAD drawing, CAM is the following step that tells the operators how to manufacture the pro
Central projection recalls the way...
Human eyes observe an object
This process allows technicians to create three-dimensional solid objects from a digital file.
3D printing
Is Coputer-aided drawing better than freehand sketching? Why?
It's much better! It helps avoiding mistakes, and when you make an error, you don't have to start all over again.
In central projection, the horizon lines meet at a point called...
Vanishing point