CNC Turning G Code List For Beginners

CNC Turning G Code List For Beginners

Download and print this nice large print CNC Turning G Code List

Download CNC turning G Code List PDF

I always begin my training sessions by telling my students not to remember anything I say.

This sounds completely stupid and my excuse is it wasn’t my idea to say it.

About ten years ago I worked in France. After about a year it seemed obvious that I would need to speak to people to order “Fish n Chips” and stuff like that.

Anyway I got these CD’s to teach me French and the bloke (can’t remember his name) started off by telling you not to remember anything he told you.

Reverse Psychology

I think there is a bit of reverse psychology going on but the main idea is that you understand not remember. It didn’t work for me because I still managed to completely fuck up the language.

Not realising French Canadians speak differently to native Frenchmen (I was working for Bombardier) . Anyway I asked this bloke, in French, to “will you come with me”. I can’t remember what it is in French and after all the bloke on the CD had specifically told me not to remember.

Anyway turns out this had a sexual connotation and made me the complete laughing stock everywhere I went from then on. (I’ll let you do the maths on that one.)

“OK which one of you bastards bought all the fuckin toilet paper in lock-down?”

Now I know what you are thinking, “that is the gnats cock of CNC Turning G Code Lists”. Honestly size isn’t everything.

Learn these first and just by seeing them every day they will just sink into your brain.

When it comes to CNC Programming it is important to enjoy your self and not get bogged down trying to remember loads of G Codes.

The truth is you only need to remember a few and it’s all about understanding what they do.

For Example This is in your Programme.

You watch in amazement as it cuts your part.

So you look up what G71 means on your list of G Codes printed in large letters on the side of your machine.

Download CNC turning G Code List PDF

“Oh yea it’s that’s roughing shit” you say.

As You Watch it Run It All Makes Sense

From your Classroom Training you know that there is a multi repetitive cycle that can rough out a part.

You understand how the cycle works already.

CNC Turning G Code List
G71 Rough Turning Cycle

So as it runs, it all makes sense.


CNC Turning G Code List
Keep it Simple

Type up or print this list in nice big letters and stick it to the side of your machine

Download CNC turning G Code List PDF

CNC Turning G Code List

G00                 Move at Rapid speed
G01                 Feed in a Straight Line
G02                 Clockwise Arc
G03                 Counter Clockwise Arc

G04                 Time Dwell

G28                 Return Axis to Home

G41                 Cutter Compensation Left
G42                 Cutter Compensation Right
G40                 Cancel Cutter Compensation

G50                 Maximum Spindle Speed
G54                Work Offsets

G71                 Stock Removal Cycle
G70                 Finishing Cycle for Above
G76                 Threading Cycle

G83                 Peck Drilling Cycle

G96                 Constant Surface Speed
G97                 Speed in RPM


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