Class Countdown Clock Case

Printing and Laser Cutting Files for the case of a Class Countdown Clock. Houses a Raspberry Pi Pico W and an 8 Digit 7-Segment Display.

More information on the project can be found on the Instructables page: https://www.instructables.com/Class-Countdown-Clock-With-Raspberry-Pi-Pico-W-and/

Laser Cutting Information

Make sure to laser cut in a well-ventilated area. Acrylic emits fumes that smell but are not lethally toxic. Regardless, it is best practice to take steps to avoid inhaling the fumes if possible.

Monitor the laser cutter during the entire duration of the cut. Fumes will get trapped between the acrylic and the bed while cutting. Let the acrylic sit in the ventilated area after the cut completes for a few minutes to allow these fumes to dissipate.

Naming Conventions

Folders:

LASER {Unit of Measure} {File Type} {Acrylic Type} {Thickness in Inches} Layers

Files:

{Thickness in Inches}_Layers_{Layout}_{Unit of Measure}

• The compact layout has the layers arranged in a 250 mm x 210 mm (9.84" x 8.27") rectangle, the same size as a Prusa MK3 bed
• The normal layout has the layers arranged in a 48" x 24" (1219.2 mm x 609.6 mm) rectangle, one of the acrylic sheet dimensions sold by Falken Design, a manufacturer of cast acrylic in the United States

Where to Buy Acrylic in the United States

• Falken Design
  • 0.0625" clear cast acrylic
  • 0.125" opaque cast acrylic
• Home Depot
  • Double-check measurements, acrylic quality, and acrylic type before you buy
• Buy cast acrylic instead of extruded acrylic. Extruded acrylic will often yellow at the edges while cutting, while cast acrylic will not.

Nesting / Cutting Multiple Cases at Once

• VCarve Pro files are included in Zipped Folders and follow the naming conventions of the other laser-cutting files
• Use the nesting tool to arrange the layers on the sheet, then re-export in your preferred file format

Necessary Layers and Colors

3D Print Settings

Printer brand: Prusa

Printer: I3 MK3S+

Brim: If printing multiple objects at once

Supports: No

Layer Height: 0.3

Infill: 20%

Filament material: PLA