Designing in TinkerCad 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 classed as acceptable for 3D printing without support material?

• 30 degrees

• 50 degrees

• 55 degrees

• 80 degrees

Which 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 2 points

• a 90 degree overhang supported on 1 side

• a horizontal wall

• a horizontal overhang that will print across 2 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 of the thickness of your nozzle diameter, the following will happen:

• they will print at the same diameter as your nozzle

• they will print at half the thickness of your nozzle diameter

• they will be disregarded and not printed at all

• the whole model will not print

It is recommended to draw your walls...

• at least twice as thick as your nozzle diameter

• at least the same size as your nozzle diameter

• at least 3 times as thick as your nozzle diameter

• at least twice as thick as your layer height

When orienting the models for 3D printing, you should...

• ensure the largest surface area is on the print bed, regardless of anything else

• try and 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 and slot a 3D printed 10x10x10mm cube into a 10x10x10mm hole?

• It will fit in but will be very tight

• It will fit in loosely

• It will not fit in

Holes are generally printed...

• at the exact same size they were designed

• smaller than the size they were designed

• larger than the size they were designed

• closed up