Tinkercad: Designing for 3D Printing

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