Superb G-code tutorial, many thanks, it’s just what I’ve been waiting for. If I have followed correctly, then you have an error in line 18, which will cause a tool crash in line 20. Your tool was already 3mm below the material surface, so your safety height move in line 18 should be G00 Z23 (we are in incremental mode). Similarly line 30 should read G00 Z26. I think you can see the error at time 41:38 where the circle holes are at the wrong depth, and the second pass is also too deep (Z-9 not Z-6). If I am mistaken, please correct me. If I am correct, then you have taught me well 👍. Thank you again!
Glad I found this channel. I start a new career next week, and even though I am provided schooling to learn, I wanted to get familiar with the material so it didn’t appear to everyone I was trying to learn the difference between Dorian and Ionian Greek. I mean it’s all Greek to me.
Great tutorial! Kept it very simple and exained everything perfectly. I just started learning G code(literally one hour ago) and stumbled across your video. This video gave me a great understanding of the basic commands and it was very motivating working alongside your video writing my own code for a part I need to cut out. I appreciate you very much! I would love to see another part just like this that goes into other G/M codes. Have you thought about turning this into a series where each new part builds upon the previous one writing more and more difficult programs? I think people would really like to see that including me.
G04 should be mentioned. Followed by a P number adds a pause to your program but not a stop. I have a machine that I don't want to move the x axis off the cutter before returning to y zero so the command G04 P7 pauses the program after M9 shuts off my saw blade via relay control for 7 seconds to allow the blade to spin down prior to executing the next line of code. This command comes in handy in ways you don't realize until you are aware of it.
there is a real problem using incremental mode. The machine has an inbuilt error and that error builds incrementally. Using absolute coding the errors are reduced.
say you want to move 1 inch when you move there will be a small error ( on a K&T model2 of the 1960's the error was typically 0.0001'' per inch) If you then reset your datum as you do in incremental mode, and move another inch you will get another error that adds to the first, and so on. When you work in absolute you are making each move relative to a single datum.
@@lauriepocock3066 Are you sure it actually resets the datum? I always figured it was still going off of the machine coordinate system and that the incremental is just to make it easier on the programmer for certain drawings
Hi I have tried to run the code and everything thing works but I cannot get the machine to run the circle for whatever reason, I'm using open builds control and I have change the code on numerous times but cannot even simulate the circle in preview. what am I doing wrong? I have run it on my home built machine as I said everything works except the 15mm circle.
Fantastic guide, clear and concise with great visuals! As someone recently getting into laser engraving and Arduino/GRBL it provides a great foundation to better understand the behaviour of the engraver and the instructions shown in LaserGRBL while it's working and to write small test scripts to check alignment and movements. :) Much appreciated!
That is So cool it will be very helpful cause i build this 4 Axis hotwire foam cutter but no Good Gcode software available except and expensive one which is DevFoam so I have to modify myself the file before cutting.
I've done a few years as a machinist and sometimes had to switch from a Fanuc controller to a system known as "Heidenhain conversational" which was a bit easier on the brain cells IMO. I wonder if any others have used it?
that was really helpful. you can make another video for turning or lathe. however i saw a little mistake when you were coding with NC to draw a whole circle. Because of G91 the Z elevate should have been Z23 (19+4) to be in the exact position where it had been in the beginning
Its my first time learning about G code. Nice simple and to the point, I love it. Just a question though. At line 18 : the G3 code z20 Wasn’t the center at -3 already. Isn’t that making your G00 at z17, I think that’s why the circle cuts were below the original plane of the edge cuts. Edit: well i see some people have already mentioned it in the comments. Good job.
A great illustrated tutorial of G code, worth a subscription of anyone's money. This is probably nit-picking but if I set this set of Gcode to my machine the part would be exactly the same shape but the dimensions would not be correct because we did not account for the 6mm diameter endmill so the part would be 3mm less on all sides. To correct this how do we tell the machine we have a 6mm endmill so it cuts to the line rather than inside the line?
Great video! Thanks! Is it possible to 'globally' adjust all speeds proportionally? I'm guessing that's done on the controller with the dial somehow? How would we exclude a particular speed IE spindle speed? Thanks
I THINK FOR THE SECOND TAKE. WE SHOULD GO BACK TO OUR ORIGIN WHICH WILL BE Z24 SINCE THAT WE WERE ON Z-04. AND WE ARE USING G91. WE SHOUT THEN TAKE Z-23 TO BE JUST ABOVE THE PART THEN Z-7 TO BE 6 MM INTO THE MATERIAL. AM I RIGHT?
Love the way you take the time to explain. Can I just ask how the machine knows what diameter cutter you are using so that it sets an offset (in this case of 3mm) off x0 y0 meaning that the shape is cut to dimension??
Thanks. there is a way to compensate with the command G41 and G42. But not all systems support that gcode. When you write your code, you can compensate easily by your self. as eg. you have a 10mm end Mill (Radius 5) If your distance is X10 that is center tool you can compensate the radius by adding or substarcting the Radius of the tool X5 and or X15
Please! clear my confusion. In the line 19, don't we have to add the diameter of the cutting tool in the x-direction? Though the tool path seems matching to the given drawing.
Hi :) You are right, It will cut at the center line, so the hole will be too big. But later today or tomorrow I will release a video about tool compensation.
When you carved so when cutting the circle out, you went to z20 and then -19 and then -4 which cut out the circle entirely. Would I be right in assuming that going to z23 would get you to your original z20 start height, then z -22 then z-7 to cut the whole circle out? Since it’s incremental the second return to z 20 only raised the bit 17mm as it was 3mm in the material. Is this correct?
Great information and stepping thru the process of manually G-coding. Well done. I made up my first simple G-Code program and the replay was so fast I couldn’t see it. My question is about the NC viewer. Is it possible to slow the replay down after coding? I looked at the settings and wasn’t able to find anything that would help. Any ideas? Again, thanks for your effort to educate newbies.
Question… is there a way or… how do you slow the NC Viewer replay down? After I wrote a simple drill gcode it played so fast I couldn’t see the process. Thanks for the previous reply and your “schooling” Best.
how to control steps movements, like lets say we have 400 circular points to move one by one and i need to move pointer in following example sequence starting from 0->10->240->45->28-> .......... -> 400 . How can we automate this ..
@@weitlingD3P thank you.im just curious only thats why i ask that question,but your tutorial is very great for the beginners like me who want to learn the gcodes/m codes.
I get the concept, but there's some practical problems. 1) The tool offset. 2) The hole would never be cut because the part would have went flying off on the second pass of the outline. Liked the tutorial.
g01 is for straight line milling g02 is for a clockwise curve and G03 is for anticlockwise. So if you look at the demo pieces, the straight edges are done in g01. To determine whether it's g02 or g03 you want to see if the cut is clockwise or counter clockwise to the current position, so the first curve (top left) curves away to the right from the current position which is clockwise so you would use g02. Just imagine a clock face at the end of a straight cut, if the line would go clockwise g02, anti clockwise g03.
But you are on G91 which means whenever an order is completed the position of the spindle is the new zero and you are already-3 millimeters on Z axis which is why the circle in minute 41:34 is lower then the actual piece why didn’t you acount for it and sorry for my bad English and thank you for this amazing educational vid
You lost me where you copied the program for the second time and supper impose the first. What is the purpose for doing that? Is the first program only draw an outline of 3mm deep?
This is a perfect tutorial for those who are just beginning.
Superb G-code tutorial, many thanks, it’s just what I’ve been waiting for.
If I have followed correctly, then you have an error in line 18, which will cause a tool crash in line 20. Your tool was already 3mm below the material surface, so your safety height move in line 18 should be G00 Z23 (we are in incremental mode). Similarly line 30 should read G00 Z26. I think you can see the error at time 41:38 where the circle holes are at the wrong depth, and the second pass is also too deep (Z-9 not Z-6).
If I am mistaken, please correct me. If I am correct, then you have taught me well 👍. Thank you again!
Good catch Blue :)
This is an excellent lecture. It is in the style of "see how simple and intuitive it is". Greetings from Poland.
This is one of the best G2 / G3 explanations on youtube ! THANKS !
Glad I found this channel. I start a new career next week, and even though I am provided schooling to learn, I wanted to get familiar with the material so it didn’t appear to everyone I was trying to learn the difference between Dorian and Ionian Greek. I mean it’s all Greek to me.
Great tutorial! Kept it very simple and exained everything perfectly. I just started learning G code(literally one hour ago) and stumbled across your video. This video gave me a great understanding of the basic commands and it was very motivating working alongside your video writing my own code for a part I need to cut out. I appreciate you very much! I would love to see another part just like this that goes into other G/M codes. Have you thought about turning this into a series where each new part builds upon the previous one writing more and more difficult programs? I think people would really like to see that including me.
Thanks Leon. Yes I have been thinking on that I hope soon that I will make the next tutorial.
After being a button pusher for years this was a great refresher for me, thank you very much for this video!
Very nice explanation of the GCode. Thanks a lot.
Although I may never be writing my own g code I have found this very beneficial as to how g code works. Thank you for sharing.
G04 should be mentioned. Followed by a P number adds a pause to your program but not a stop. I have a machine that I don't want to move the x axis off the cutter before returning to y zero so the command G04 P7 pauses the program after M9 shuts off my saw blade via relay control for 7 seconds to allow the blade to spin down prior to executing the next line of code. This command comes in handy in ways you don't realize until you are aware of it.
Hi John You are right. but I had to keep it as simpel as possible. I plan to make a part 2
completely new to G Code and i was able to understand this perfectly. THANK YOU!!! Subscribed for more.
I have an exam tomorrow and this video have greatly helped me. So thank you my guy
Thanks and good luck with the exam 🤞
good job. great for someone that has not been around the "magic".
Woah, great and gentle lesson. I actually learned something. Many thanks prof.
Thank you.
Thanks! (below includes corrections re the circle depths)
;GCode training
;Material6mm
;Endmill 6mm z safety height 20mm
G21 G91 G94; Start Code
G00 Z20
G00 X0 Y0
G00 Z-19
MO3 S1400
G01 Z-4 F250
G01 Y40 F800
G02 X10 Y10 R10
G01 X30
G03 X10 Y-10 R10
G01 Y-8.66
G03 Y-23.22 R19
G01 Y-8.12
G01 X-50
G00 Z23
G00 X7.5 Y15
G00 Z-19
G01 Z-4 F250
G02 I7.5
; Take 2
G00 Z20
G00 X-7.5 Y-15
G00 Z-19
MO3 S1400
G01 Z-7 F250
G01 Y40 F800
G02 X10 Y10 R10
G01 X30
G03 X10 Y-10 R10
G01 Y-8.66
G03 Y-23.22 R19
G01 Y-8.12
G01 X-50
G00 Z26
G00 X7.5 Y15
G00 Z-19
G01 Z-7 F250
G02 I7.5
Great for beginners to understand everything in this video
there is a real problem using incremental mode. The machine has an inbuilt error and that error builds incrementally. Using absolute coding the errors are reduced.
Which machine or do you mean the simulator?
say you want to move 1 inch when you move there will be a small error ( on a K&T model2 of the 1960's the error was typically 0.0001'' per inch) If you then reset your datum as you do in incremental mode, and move another inch you will get another error that adds to the first, and so on. When you work in absolute you are making each move relative to a single datum.
What if To minimize working time, maybe back to the initial position ones in a while to calibrate but still using incremental.
@@lauriepocock3066 Are you sure it actually resets the datum? I always figured it was still going off of the machine coordinate system and that the incremental is just to make it easier on the programmer for certain drawings
Thanks so much sir, this lesson has opened up a brand new world for me! thanks again.
Happy I could help More to come
Hi I have tried to run the code and everything thing works but I cannot get the machine to run the circle for whatever reason, I'm using open builds control and I have change the code on numerous times but cannot even simulate the circle in preview. what am I doing wrong? I have run it on my home built machine as I said everything works except the 15mm circle.
G02 I7.5 seems to be my nemesis. it just doesn't work, point 22.
Great video, I like the way you program arcs, it is so much easier than the way I was programming arcs, thankyou.
Circle was cut to deep because you went up 20 instead of 23. Incremental mode
I came to the comments to make sure someone caught this . Human error . We become great by holding each other accountable
I like you explain .
Thank for you sharing the knowledge 💐👍🏻👍🏻
Fantastic guide, clear and concise with great visuals! As someone recently getting into laser engraving and Arduino/GRBL it provides a great foundation to better understand the behaviour of the engraver and the instructions shown in LaserGRBL while it's working and to write small test scripts to check alignment and movements. :) Much appreciated!
Thank you very much
Well explained, thanks for sharing valuable knowledge
Stay blessed
thanks!!!! the best newbie guid on youtube!!!
Very clearly explained, thank you.
Extremely helpfull indeed. Thank you so much.
Thank you so much for this its helped so much explaining things for someone that dipping their toe into G code 👍
Very interesting for some one like me, I'm a beginner...thankyou so much
damm i am germany am glad to find ur vedio ist easy to unterstand even with my poor english simple is gold
Great topic, like it, nice again 🙂👍
Explained in a great way🎉 thanks
This is wonderful start for me as beginner 🙏🙏
Thanks for watching I will soon come with a part Two
That is So cool it will be very helpful cause i build this 4 Axis hotwire foam cutter but no Good Gcode software available except and expensive one which is DevFoam so I have to modify myself the file before cutting.
thank you bro it help me a lot as a beginner.
I've done a few years as a machinist and sometimes had to switch from a Fanuc controller to a system known as "Heidenhain conversational" which was a bit easier on the brain cells IMO.
I wonder if any others have used it?
This tutorial is very helpful
Excellent thank you!
Edit: make a part 2? perhaps expound and do a short 3 part lathe series?
Amazing , just what I needed
Very nice thanku ❤
Good job great for someone around the magic.
that was really helpful. you can make another video for turning or lathe. however i saw a little mistake when you were coding with NC to draw a whole circle. Because of G91 the Z elevate should have been Z23 (19+4) to be in the exact position where it had been in the beginning
Well explained, thanks for sharing!
You are welcome
Best simple g code tutorial by far !
One thing though, you did not take into consideration tool's diameter or maybe this is for a next course
cheers
Hello yes is the next course.
For training purpose, I think here you should use drilling cycle to make a hole and with tool changing command. It's my opinion 😊
Incredibly helpful! Thank you!
Very Helpful, Thank you
Excellent video, please do more.
Thanks Paul. I will. Part 2 will be peek drilling, and subcommand.
Thanks for G code lecture very helpful and hopeful for me are there any more
Thanks for your comment. Yes I will soon come with part 2
Love this , thank you so much ❤
Mange Tak! This is fantastic
Selv tak :)
Wonderful video.
Elligent
Mast
nice
Its my first time learning about G code. Nice simple and to the point, I love it.
Just a question though. At line 18 : the G3 code z20
Wasn’t the center at -3 already. Isn’t that making your G00 at z17, I think that’s why the circle cuts were below the original plane of the edge cuts.
Edit: well i see some people have already mentioned it in the comments. Good job.
Well spotted, I made a mistake there :)
A great illustrated tutorial of G code, worth a subscription of anyone's money. This is probably nit-picking but if I set this set of Gcode to my machine the part would be exactly the same shape but the dimensions would not be correct because we did not account for the 6mm diameter endmill so the part would be 3mm less on all sides. To correct this how do we tell the machine we have a 6mm endmill so it cuts to the line rather than inside the line?
You are right. Tool compensation will be in next episode. Thanks for watching
The most beautiful song 🎵
MUY BIEN ESE INGLES CLARITO Y BIEN PRONUNCIADO.
👍👍👍👍👍👍👍
Gracias
Great video! Thanks! Is it possible to 'globally' adjust all speeds proportionally? I'm guessing that's done on the controller with the dial somehow?
How would we exclude a particular speed IE spindle speed?
Thanks
Thanks. As ecxamel speed is changed with the S value in the M3 command as eg M3 s1000 Fedrate will be F value F250
I THINK FOR THE SECOND TAKE. WE SHOULD GO BACK TO OUR ORIGIN WHICH WILL BE Z24 SINCE THAT WE WERE ON Z-04. AND WE ARE USING G91. WE SHOUT THEN TAKE Z-23 TO BE JUST ABOVE THE PART THEN Z-7 TO BE 6 MM INTO THE MATERIAL. AM I RIGHT?
I ended up taking it using G00 Z23 for the height reset before the circular cut.
That made everything else even out.
Great video!! Thanks for putting this together.
What g-code can you recommend in order to make the movement along the coordinates very slow?
The movement is controlled by the F command in G01. I depends on what material you are cutting and dept.
I dont know what im talking about, but dont you have to correct for the tool radius when you trace its path for the part?
You are correct. It is called tool compensation . The commands for tool compensation is G40 G41 G42
Love the way you take the time to explain. Can I just ask how the machine knows what diameter cutter you are using so that it sets an offset (in this case of 3mm) off x0 y0 meaning that the shape is cut to dimension??
Thanks. there is a way to compensate with the command G41 and G42. But not all systems support that gcode. When you write your code, you can compensate easily by your self. as eg. you have a 10mm end Mill (Radius 5) If your distance is X10 that is center tool you can compensate the radius by adding or substarcting the Radius of the tool X5 and or X15
Excellent tutorial, but you never mentioned cutter offset, the part would 3mm wrong on all edges, correct?
Yes you are correct, I hope to make a video about tool offset in the coming weekend
Please! clear my confusion. In the line 19, don't we have to add the diameter of the cutting tool in the x-direction? Though the tool path seems matching to the given drawing.
Hi :) You are right, It will cut at the center line, so the hole will be too big. But later today or tomorrow I will release a video about tool compensation.
Are the G spot and the G code one and the same things?
Great Job - Thanks you :-)
Great tutorial :)))
When you carved so when cutting the circle out, you went to z20 and then -19 and then -4 which cut out the circle entirely. Would I be right in assuming that going to z23 would get you to your original z20 start height, then z -22 then z-7 to cut the whole circle out? Since it’s incremental the second return to z 20 only raised the bit 17mm as it was 3mm in the material. Is this correct?
Correct, and well observed, was my mistake :)
super thanks a lot😌
Great information and stepping thru the process of manually G-coding. Well done.
I made up my first simple G-Code program and the replay was so fast I couldn’t see it.
My question is about the NC viewer. Is it possible to slow the replay down after coding? I looked at the settings and wasn’t able to find anything that would help. Any ideas?
Again, thanks for your effort to educate newbies.
Glad I could help
Question… is there a way or… how do you slow the NC Viewer replay down?
After I wrote a simple drill gcode it played so fast I couldn’t see the process.
Thanks for the previous reply and your “schooling”
Best.
Hello you can do step by step
How would this work if you want to account for the width of the end mill. It seems like it would cut the part a little small?
Hi Jesus You can use the G41 and G42 witch is left or right compensation. Or when you make your G code compensate when you program.
Do you have the Part 2 of this? Part 1 is interesting.
Hi Colin. Yes it will come soon. Sorry for being late, but I had some heart issues. But soon I am fit to fight :)
@@weitlingD3P please take care of yourself
Good info
great video training- But I lost you in the copy and paste section toward the end.
Thank u.
But for the circle u should code like
G00 z 23
Not g00 20
Because the end mill is -3 z axis already.
It surely impact !!!
how to control steps movements, like lets say we have 400 circular points to move one by one and i need to move pointer in following example sequence starting from 0->10->240->45->28-> .......... -> 400 . How can we automate this ..
may i ask a question? the tool cant encounter the problem when your coordinates is x0 y0 then the depth is direct to z-3 ?
Well done. Yes you are right, I made a mistake :)
@@weitlingD3P thank you.im just curious only thats why i ask that question,but your tutorial is very great for the beginners like me who want to learn the gcodes/m codes.
G-Code is geometric code for computer aided design (CAD).
For training purpose, I think you should use drilling cycle with tool changing command. It's my opinion 😊
I get the concept, but there's some practical problems. 1) The tool offset. 2) The hole would never be cut because the part would have went flying off on the second pass of the outline. Liked the tutorial.
Is true tool offset and drilling will be in part 2
Thank you so much.
I will like to replicate the drawing using your code.
How do I get a copy of your code?
Thank you once again
Thanks for watching. I am sorry I just made the code on the fly, I just checked and I dident save it
You are great
how do you write code while accounting for the diameter of the tool?
Hi I will soon upload a video about tool compensation. :) Thanks for watching and Mery Christmas
ধন্যবাদ এই বিডিও টি দেওয়ার জন্য
You are welcome
Where is the tool offset taken into consideration?
It will come in another video
Thank you! My only disconnect is how do you determine using G01, G02, G03?
g01 is for straight line milling g02 is for a clockwise curve and G03 is for anticlockwise. So if you look at the demo pieces, the straight edges are done in g01. To determine whether it's g02 or g03 you want to see if the cut is clockwise or counter clockwise to the current position, so the first curve (top left) curves away to the right from the current position which is clockwise so you would use g02. Just imagine a clock face at the end of a straight cut, if the line would go clockwise g02, anti clockwise g03.
@@malcolmfenech1749 Awesome! Great explanation. Thank you!
❤❤❤💪💪💪💪 excelent
Is this for lathe or milling?
Milling, but you can use NC viewer for Lathe as well
@@weitlingD3P alright thanks mate 👍
please why did u subtract 19 from Z
The Z safe high is 20 mm above the plate. when i go 19mm down I am 1 mm above the plate, and start the job
But you are on G91 which means whenever an order is completed the position of the spindle is the new zero and you are already-3 millimeters on Z axis which is why the circle in minute 41:34 is lower then the actual piece why didn’t you acount for it and sorry for my bad English and thank you for this amazing educational vid
@@ihebrhimi4338 Thanks for the comment. that is a mistake :)
well done !
good day sir....i new in this and i have a question what happened to 4mm in R19 CURVE?? thank u for the answer....godbless❤️❤️❤️🙏🙏🙏
Can Gcode generated by nc viewer be
Install in ddcsv3.1
Hi and thanks for watching. I would say yes. As long you follow the syntax for the ddcs.
Subcribing to your channel for more learning. Thanks
Thank you
Job good
What app is this
You lost me where you copied the program for the second time and supper impose the first. What is the purpose for doing that? Is the first program only draw an outline of 3mm deep?
No m6?
Not in this session
I need a beginner for this beginner video 😂
❤❤❤❤❤❤
Please is there any tutorial for Lathe machine
I am sorry, no I dont use lathe.
@@weitlingD3P Alright boss, I've found some videos on it tho .... Your tutorial on lathe was great
Why 17,5 if hole is just15
"I" and radius 7,5