Lessons Learned: Advice
The coaster project was the most valuable project for me; it combined the machining of the coaster with earning our HAAS CNC Milling certification. Although, to succeed it is crucial to start early and dedicate time to practicing with the tooling and the operation basics. The CNC machine might seem intimidating, but the more time you spend with it, the more comfortable you will get.
I recommend using the in-class demo as a foundation but take the time to understand the machines' function which includes the control panel, programming steps, and the safety features like the E-stop and feed hold. As mentioned, practicing installing and removing tools is essential practice, so that when the time comes, you're able to securely fasten and align your piece within the specified fixture (the fixture was made by another CSU student!) as well correctly go through the procedure.
Project 3 | Coaster Project
Cost Estimate
Considerations
Raw Material:
- 0.125" x 6" Aluminum Rectangle Bar (6061 - T6511) is $14.86
- The part only uses approximately 3.6in., per-piece material cost approximately $8.91
Labor Cost:
Machinist Hourly Rate: $25.92/hr.
Machining Time: 1 hour
Total Labor Cost: $25.92
Total Cost:
Raw material: $8.91
Labor: $25.92
Total: $34.83/ coaster
Efficiency Improvement Proposal
Considering a bulk purchase for the raw stock in custom dimensions to the 3.6" pre-cut bar could reduce prep time during the production process
Stock Preparation
Error Detection
Using something like a probe system for measurements could verify the stock position and its alignment before the operating begins
Mass Production Cost: 10,000 units
