In this assignment I drew cut, and designed a rollable dice. I chose the beginning level since this is my first time using laser cutter and assemble things without nuts or glues.
First, I measured the kerf results from laser cut by measuring the gap between the test wood from canvas file. The total gap between 10 lines is 0.1 inch. Therefore, I assume the kerf to be 0.01 inch.
Next, I went to en.makercase.com to download a premade file with 4 inch edge length and 0.01 kerf that can be assembled to a box. A more detailed dimensions of the box are shown in the picture below
After everything is ready, I laser cut them out after a test cut.
The settings of the laser cut are:
Vector:
- Speed: 65%
- Power: 50%
- Frequency: 50%
Engraving:
- Resolution: 600
- Speed: 100%
- Power: 40%
After that, I assembled them together with a soft hammer to make it tight.
Here is the final design!
Lets roll the dice!
Here is the proof that cleaned my working area.
Cost Estimatimation:
Labor: $20, $10 each hour for a rice student to work as a TA. I spent 2 hours
Materials: $12.75, it costs $12.75 in Home Depot to get a 2 ft. x 2ft. plywood
Machinery: $1, Assume the laser cutter was purchased with $16000. It will completely depreciate after 4 years, the depreciation price for an hour is $16000 / (4 x 365 x 24) = $0.45, adding electricity, tax, maintenance and insurance, lets assume it costs $1 an hour.
In total, this project costs $33.75
