students will develop a detailed technical drawing of a plastic toy block,
starting with making hand
sketches, measuring geometric features using common metrological tools, and creating a CAD drawing.
To familiarize yourself with the use of a vernier caliper and micrometer.
To refresh and apply your technical drawi
To consider the manufacturing processes involved in the creation of a simple toy.
Calipers and Micrometers
Read the attached material regarding the use of the
ernier caliper and the micrometer.
given piece on a paper sheet.
the dimensions of the given piece
ernier calipers and
Record your measurements on
. Make sure to measure internal geometries and thicknesses. Your
drawing should fully describe the
Creating a CAD Drawing
Convert your hand
sketch into a scale CAD drawing
Speculate as to what manufacturing techniques are used to produce the
Make reasonable guesses
and explain your reasoning.
Notice that the block has internal ribs. (Did you include them in your drawing?) What is the purpose of these
ribs? Why are they located where they are?
Estimate the volume of material used to manufacture the Duplo block. How did you come to
Is the part perfectly symmetrical? Are the thicknesses consistent across surfaces?
The interior of the part has markings. How were these markings created?
Comment on which block features and dimensions may be critical from a manufacturing po
int of view
(hypothesize on how the blocks are made and what would make a block easy to make).
Comment about what block features and dimensions are critical from the functional point of view (e.g.,
interaction when used with other blocks)
Write a lab report