Test Dividers 1.1

… wandering eyes. As the ultimate cheating preventer, this divider is perfect for teachers looking to prevent cheating during test-taking.

The 3D printed component measures 19.5 cm top to bottom, 8 cm wide, and 6 cm wide. The inner ridge measures 3.5 cm long and 2.5 cm tall, meaning that it will hook on a table with a 2.5 cm thick edge. The component where the cardboard slides in is .5 cm wide and 15 cm tall.

The cardboard measures approximately 50 cm tall and 1 meter long.

Standards

NGSSCCSS

Overview and Background

Design for printed component

Upon receiving the assignment, I measured the edge of the table, which was 2.5 cm thick, and protruded 3.5 cm from a wooden base. Once jotting dow those values, I opened SolidWorks and began. I decide quickly that I want the component to clasp the edge of the table in order to keep it steady. This decision makes the divider specific to a particular type of table. I then build up the design upwards, putting in a slot that was initially .8 cm wide but is narrowed down to .5 cm in the final version. This is where the cardboard can slide in. I then fill-ited the corners into a gradual slop to give it stability. Initially, this part sloped outwards and was much shorter, but that too was changed in the final design. To see the prototype, look at the image below. This initial design, however, was deemed too costly in terms of filament and not stable enough, and was changed. The top portion was elongated and made thinner. It was also curved inwards, again, to use less filament and to provide the user with an easier time sliding in the cardboard.

Cardboard Insert

The cardboard used was acquired from WB Mason boxes, which are abundant in our school. The lids of the boxes are discarded and the box pulled apart. The flaps of the box are removed with scissors until a rectangle is left. The same steps are followed on an additional box until there are two identical cardboard rectangles. Then, the rectangles are put back-to-back and, using duct tape, are tapped together. The tape follows the edges of the cardboard until all the edges are reinforced by the duct tape.

Lesson Plan and Activity 1

Assignment:

Make a useful teaching tool for the teachers in our school.

Materials Needed

Divider Printed Component

A 3D printer Filament

Cardboard Insert

Two WB Mason boxes (or really, any two large identical sheets of cardboard) Duck Tape Scissor

Credits

We are trying to transfer all prior work to printables.com. The author of this information is NinjaGirl on Thingiverse.com. 

The original page is linked