Computer Controlled Machining

This week we focus on computer-controlled machining, particularly CNC milling and large-scale fabrication. Big things! The lecture covered machine types, tool paths, materials, and real-world applications of CNC machining in architecture and product design.

To Do This Week:

Pick Out Tooling:
• Select the appropriate CNC tools for your project.
• Consider different tool types based on the material you're working with.

Understand Speeds & Feeds:
• Learn how cutting speed and feed rate affect machining quality.
• Adjust settings to optimize material cutting without damaging tools.

Maintenance on the CNC Bed:
• Run a test job to check for wear and tear.
• Ensure the vacuum bed or fixture points are clean and functional.

Practice Nesting Techniques:
• Arrange parts efficiently to minimize material waste.
• Understand how to maximize cutting efficiency on your stock material.

Learn About Joints & Assembly Methods
• Explore different types of wood joints for assembly:
• Consider tab-and-slot designs or finger joints for better structural integrity.

Safety Training & Preparation:
• Ensure you are in a good mental and physical state before operating machines.
• Review safe CNC machining practices to prevent accidents.
• Execute Your Machining Project
• Plan and complete a CNC-machined piece using the skills learned.
• Avoid last-minute rushing

Notes from Lecture:

• Shaper Origin → A handheld CNC router with computer vision for precise engraving.
• Maslow CNC → Uses tendons and anchor points instead of a gantry.
• Maslow CNC → Uses tendons and anchor points instead of a gantry.
• Onsrud CNC → More rigid and industrial than a ShopBot, allowing aggressive machining.
• Cardboard (Heavy-Duty) → Can be machined into lightweight furniture, but needs an active driven knife.
• Foam (Rigid Insulation Foam) → Machines easily, ideal for large-scale mold making and architectural casting.
• Plywood (Veneer Core) → Strong and aesthetically pleasing but expensive ($100 per sheet).
• MDF (Medium-Density Fiberboard) → Smooth surface, heavier, weaker than plywood, may release toxic resins.
• MDO (Medium-Density Overlay) → A hybrid of MDF and veneer plywood, balancing strength and smoothness.
• OSB (Oriented Strand Board) → The "hotdog" of wood, made from compressed wood chips, a cheaper alternative.
• Open vs. Closed Loop Control → Determines precision and ability to self-correct tool paths.
• Gantry vs. Handheld Machines → Gantry systems are rigid but fixed; handheld routers allow flexibility.
• Vacuum Beds → Some high-end machines use them to hold down materials for precision cutting.
• Tool Stiffness & Aggressiveness → Industrial machines allow deeper cuts without recalibration.

1. Step 1

First step explanation