Trivia quiz questions with answers about 3D printing
3D Printing Trivia Quiz Questions With Answers
What is 3D printing?
A: 3D printing is any of various processes in which material is joined or solidified under
computer control to create a three-dimensional object with material being added together (such as liquid molecules or powder grains being fused together).
3D printing is used in both rapid prototyping and what?
A: Additive manufacturing.
Objects can be of almost any shape or
geometry and typically are produced using digital model data from a 3D model or what?
A: Another electronic data source such as an Additive Manufacturing File (AMF) file (usually in sequential layers).
The term "3D printing" originally referred to a process that does what?
A: Deposits a binder material onto a powder bed with inkjet printer heads layer by layer.
More recently, the term is being used in popular vernacular to encompass a wider variety of what?
A: Additive manufacturing techniques.
When did the umbrella term “additive manufacturing" (AM) gain wide currency?
A: In the 2000s inspired by the theme of material being added together (in any of various ways).
In contrast, the term subtractive manufacturing appeared as a retronym for what?
A: For the large family of machining processes with material removal as their common theme.
By the early 2010s, the terms 3D printing and additive manufacturing evolved senses in which they were alternate umbrella terms for what?
A: Additive technologies.
Until recently, the term 3D printing has been associated with machines that are what?
A: At the low-end in price or in capability.
Both terms reflect that the technologies share the theme of material addition or joining throughout a what?
A: A 3D work envelope under automated control.
Other terms that have been used as synonyms or hypernyms have included what?
A: Desktop manufacturing, rapid manufacturing and on-demand manufacturing.
Today, the term subtractive has not replaced the term machining, instead what?
A: Complementing it when a term that covers any removal method is needed.
What is agile tooling?
A: Agile tooling is the use of modular means to design tooling that is produced by additive manufacturing or 3D printing methods to enable quick prototyping and responses to tooling and fixture needs.
Agile tooling uses a cost effective and high quality method to do what?
A: Quickly respond to customer and market needs.
On 16 July 1984, Alain Le Méhauté, Olivier de Witte, and Jean Claude André filed their
patent for what?
A: The stereolithography process.
The application of the French inventors was abandoned by whom?
A: The French General Electric Company (now Alcatel-Alsthom) and CILAS (The Laser Consortium).
What was the claimed reason?
A: "for lack of business perspective".
Three weeks later in 1984, who filed his own patent for a stereolithography fabrication system, in which layers are added by curing photopolymers with ultraviolet light lasers?
A: Chuck Hull of 3D Systems Corporation.
Hull defined the process as a what?
A: "A system for generating three-dimensional objects by creating a cross-sectional pattern of the object to be formed".
What was Hull's contribution?
A: The STL (Stereolithography) file format and the digital slicing and infill strategies common to many processes today.
Additive manufacturing processes for metal sintering or melting (such as selective
laser sintering, direct metal laser sintering, and selective laser melting) usually went by what?
A: They went by their own individual names in the 1980s and 1990s.
At the time, all metalworking was done by processes that we now call what?
A: Non-additive (casting, fabrication, stamping, and machining).
By the mid-1990s, where were new techniques for material deposition developed?
A: At Stanford and Carnegie Mellon University, including microcasting and sprayed materials.
Sacrificial and support materials had also become more common, enabling what?
A: New object geometries.
The term 3D printing originally referred to a powder bed process employing standard and custom inkjet print heads, developed at MIT in 1993 and commercialized by whom?
A: Soligen Technologies, Extrude Hone Corporation, and Z Corporation.
The year 1993 also saw the start of a company called Solidscape, introducing a what?
A: A high-precision polymer jet fabrication system with soluble support structures, (categorized as a "dot-on-dot" technique).
In 1995 the Fraunhofer Institute developed what?
A: The selective laser melting process.
3D printable models may be created with a what?
A: A computer-aided design (CAD) package, via a 3D scanner, or by a plain digital camera and photogrammetry software.
3D printed models created with CAD result in what?
A: Reduced errors and can be corrected before printing, allowing verification in the design of the object before it is printed.
The manual modeling process of preparing geometric data for 3D computer graphics is similar to what?
A: Plastic arts such as sculpting.
3D scanning is a process of collecting digital data on the shape and appearance of a real object, and creating what?
A: A digital model based on it.
Printer resolution describes layer thickness and X–Y resolution in what?
A: Dots per inch (dpi) or micrometers (µm).
Typical layer thickness is around what?
A: 100 μm (250 DPI), although some machines can print layers as thin as 16 μm (1,600 DPI).
X–Y resolution is comparable to that of what?
A: Laser printers.
What diameter are the particles (3D dots)?
A: They are around 50 to 100 μm (510 to 250 DPI) in diameter.
Traditional techniques like injection molding can be less expensive for manufacturing polymer products in high quantities, but additive manufacturing can be what?
A: Faster, more flexible and less expensive when producing relatively small quantities of parts.
3D printers give designers and concept development teams the ability to produce parts and concept models using a what?
A: A desktop size printer.
Though the printer-produced resolution is sufficient for many applications, printing a slightly oversized version of the desired object in standard resolution and then removing material with a higher-resolution subtractive process can achieve what?
A: Greater precision.
The layered structure of all Additive Manufacturing processes leads inevitably to a what?
A: A strain-stepping effect on part surfaces which are curved or tilted in respect to the building platform.
The effects strongly depend on what?
A: The orientation of a part surface inside the building process.
Some printable polymers such as ABS, allow the surface finish to be what?
A: Smoothed and improved using chemical vapor processes based on acetone or similar solvents.
Some additive manufacturing techniques are capable of using multiple what?
A: Materials in the course of constructing parts.
These techniques are able to print in multiple what?
A: Colors and color combinations simultaneously, and would not necessarily require painting.
Some printing techniques require internal supports to be built for what?
A: Overhanging features during construction.
These supports must be mechanically removed or what?
A: Dissolved upon completion of the print.
All of the commercialized metal 3D printers involve cutting the metal component off what?
A: The metal substrate after deposition.
The main differences between processes are what?
A: The way layers are deposited to create parts and in the materials that are used.
Each method has its own advantages and drawbacks, which is why some companies offer a choice of what?
A: Powder and polymer for the material used to build the object.
What are the main considerations in choosing a machine?
A: Generally speed, costs of the 3D printer, of the printed prototype, choice and cost of the materials, and color capabilities.
Printers that work directly with metals are generally what?