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WorksheetsTinkercad: Designing for 3D Printing
Total questions: 20
Worksheet time: 13mins
An overhang is a part of a model that is
supported underneath
Partially or fully unsupported underneath
vertical
floating
Which of the following overhang angles are generally classified as acceptable for 3D printing without support material?
45 degrees or less
50 degrees or less
60 degrees or less
90 degrees or less
Which one of these statements is true?
The smaller the overhang angle, the worse the surface quality
The larger the overhang angle, the worse the surface quality
Bridging refers to
a 45 degree overhang between parts
a 90 degree overhang supported on one side
a horizontal wall
a horizontal overhang that prints across two points
When bridging large distances without support material, you will notice
drooping of the model
underextrusion
good surface quality
material burning around the nozzle
Generally, if walls are drawn at a quarter the thickness of the nozzle diameter, the following will happen:
they will print at the same diameter of the nozzle
they will print at half the thickness of the nozzle
they will be disregarded and not printed at all
The whole model will not print
It is recommended that you draw your walls . . .
at least twice the thickness of the nozzle
at least the same size as the nozzle
at least three times the thickness of the nozzle
at least twice the layer height
When orienting models for 3D printing . . .
ensure the largest amount of surface area is on the print bed
try to minimize the amount of overhanging features over 45 degrees
always enable support material
try and minimize the amount of overhanging features over 30 degrees
Generally, what will happen if you try to slot a 3D printed 10x10x10 mm cube into a 10x10x10 mm hole?
It will fit but will b every tight
It will fit loosely
It will not fit in
Holes are generally printed . . .
at the exact same size that they were designed
smaller than the size that they were designed
larger than the size that they were designed
closed up
When engraving or embossing details onto a model, you should ensure that . . .
they are the exact same thickness as your nozzle diameter
they are at least the same thickness as your nozzle diameter
the thickness is smaller than the nozzle diameter
they are atleast the same thickness as your layer height
To ensure good bed adhesion you should . . .
minimize the surface area touching the print bed
design a model with no overhangs
design a model with no bridges
ensure there is sufficent surface area touching the print bed
If your model has a very small surface area touching the print bed, the model may
topple over during printing
cause the slicing software to not generate a path
adhere too well to the print bed
have a poor surface quality
Draw an example of an overhang
To download a file from Tinkercad that can be printed on the 3D printer in the classroom, you should:
Take a screenshot and send to your teacher
Export the file as an .STL
Import the file and send to your teacher
Send to Thingiverse to be printed
When you use several different shapes to make one object in Tinkercad, you should always
duplicate the shapes
group all of the shapes together
align the shapes
hide the shapes
What could you do to this shape to make it better for 3D printing?
Select all that apply.
Make it flat on its side
Expand the point on the bottom so that it is larger
Make the design smaller
What is the nozzle size for most printers?
.4 mm
.6 mm
1 mm
10 mm
Which orientation allows for the MOST surface area touching the workplane?
1
2
3
True or False: The box will fit into the hole.
True
False
