CNC Router knowledge
Terminolgy
- Candle
- Collet
- Collet Nut
- Ball note end-mill
- Chatter - Machine struggling to cut through material, vibrating
- Chips
- Chip-load
- V-Bits (Engraving bits)
- Bull nose end-mill
- Channel (flute)
- Corn-cob style cutters (vs spiral cut)
- Good for fine detail
- End-mill
- G-Code
- Feed-rate
- Feeds & Speeds
- Flat end-mill
- Flute
- Two flute flat end mill
- One flute flat end-mill
- Insert Bit - Clamps down on bit
- Shank
- ER11 (Collet)
- Run-out
- Tapered ball-nose end-mill
- Good for 3D carving
- Fine detail
- Up-cut
- Down-cut
- RPM (Spindle speed)
- Compression
- Spoil Board
- Spindle
- Torque
- Surfacing-bit
- Bottom-cleaning bit
- Used for surfacing a spoil-board
- Make sure surfaces are flat
- UGS
- V-carve
- V-bits
- Tool Database
- XYZ
- Zed
Installing a bit
Videos: - https://www.youtube.com/watch?v=obwwoEAbBjc
Make sure bit is inserted 1/3 or 1/2
Slide in right up to the flute, then tighten
Common bits
1/4
Flat End-mill
End-mills
- 1/4 inch end-mill
- 1/8 inch end-mill
- Corn-cob end-mill
Down-cut
Feeds & Speeds
- Feed-rate
Feed Rate = (Spindle Speed) x (Chip load) x Flutes
Chip load = Feed Rate / (Spindle Speet x Flutes)
Expertiments
- Test shapes: Square
- Start slow, 400-500 mm per minute
- Feed rate:
- Depth:
Materials
Wood
- Hard-wood
- Soft-wood
- Aluminum
Notes
- Changeable blades
- Color coating
- Stays sharper
- CNC Calculator - Put your things out, get the end result you are after
Advice
- Keep a journal with projects, when you make successful cuts.
Design Software
Easel
Unsolved Problems
- Calculator to find Feeds and Speeds for a Material