Computer-Controlled Machining
Quick References
- Introduction to CNC
- FablabSP CNC training materials
- Makehaven CNC Milling I
- Makehaven CNC Milling II
projects
machines
stock
- rigid foam insulation
- veneer plywood
- Medium Density Fiberboard (MDF)
- HDPE
- Lexan, polycarbonate
- Aluminum (Composite Panel)
- delrin, POM
vendors
- McMaster-Carr
- US Plastics
- Home Depot
- Singapore
job shops
- Plethora
- Proto Labs
- Star Rapid
- Singapore
tooling
- drills vs mills
- router, V bits
- flutes
- coatings: HSS, carbide, TiCN, TiAlN, etc.
- center-cutting
- up/down cut
- flat/ball end
- vendors
- fablab inventory list
speeds and feeds
- chip load: ~ 0.001-0.010”
- feed rate (inches per minute) / (RPM x number of flutes)
- cut depth: ~ tool diameter
- step-over: ~ tool diameter/2
- Shopbot Feeds & Speeds charts
- CNC Cookbook Speeds & Feeds
- Cutter Shop: Chip Load chart, speeds & feed
- CBA - MIT Speeds & Feed calculator
lubricants
abrasive machining, grinding
fixturing
- vises
- clamps
- screws
- vacuum, DIY vacuum table
- wedges
- weights
- glue
- tape
- vendors
- CNC fixturing tips
sacrificial layers, squaring
dust collection
flexures, living hinges, kerf bending, steam bending
Joinery
toolpaths
- kerf, offset, runout
- conventional, climb
- rough/finish cuts
- high-speed, dry, ramping, adaptive clearing, swarf, rest
- one-sided, two-sided, registration
- 2, 2.5, 3, 4, 3+2, 5 axis
- tool length compensation
- cut depth, clearance, collisions
- t-bone, dogbone, Fusion 360 dogbone
- tabs, onion skinning
- nesting, deepnest.io
- lead-in, -out
- test cuts, cutting air
- simulation
- prototyping: cardboard scale model
- 2D CNC milling toolpaths
- Opendesk Examples
CAM
- [Fusion 360]
- VCarvePro
- FeatureCAM
- Mastercam
- HSMWorks
- CAMWorks
- Freecad Path
- Solidworks CAM
- mods outline rough finish
file formats
- .rml
- .sbp
- .g, .nc, .tap
- Omax .ord
- viewers
- understanding gcode
safety
- training
- cuts, burns, impacts, fires
- glasses, shoes, clothes, hair, gloves
- look, listen
- don’t reach into a powered tool
- emergency stop, assistance
Note:
- EAS Versatil has a post-processor setup for Fusion 360.
- Click here for the link.
- Download the zip file nceasy.cps and move it to your post-processor folder.
- Installing personal post processors in Fusion 360
assignment
- document speeds & feeds calculation, recommended speeds/feeds for plywood, recommended kerf for machining kerf test example
- make (design+mill+assemble) something big, documenting your design process, generating the cam toolpath, machining and assembly process
- Fusion 360 CAM examples
- Examples of assignment