Thank you. This was the most basic, and simple explanation of how Feature Control Frames work, or how to figure out how to set one up from the very first item, the Geometric Control Symbol. Eveyone else just places them on the screen, and then gets busy explaining what each symbol means, and it works.
Alright Prof RDO, it's 2022 and time for my annual D> review(Dimensioning and Geometric Tolerancing, is more accurate description I hate GD & T). Thanks for these current videos. Just a warning in advance you can expect to seem some rants in the comment section from me. Mostly, it's about what I see in industry also the ambiguous use of english language and "shop talk" to shortcut what should be very accurate/precise descriptions. As an engineer, I've always suspected that machine shops have a gripe against engineers and this is a very big hammer to be used to knock us down a few pegs(deservedly so, because engineers typically create drawings with tolerances that "tell" the machinist what to do...even if we don't know what to do...). Anyways, I like what you said in the beginning that D> is a "language" that you must tolerate and learn. Step one, the terms and definitions. So, it's memorize time again. Good exercise for my fading brain cells. Keep on.
Thanks so much for the input! I like your redefining of the acronym. I have a textbook for GD&T called “design dimensioning & tolerancing” which in my opinion is a better description than most GD&T books. I’d get skewered in the comments if I used your common sense reordering of the letters, or I would adopt it as well. I get static when I say “datum” instead of “datum feature”. Thanks so much for your support and I like forward to more thoughtful & constructive comments in the future.
Great question. The datum comes from the true geometric counterpart, which is simulated with inspection equipment. So the datum axis of a hole is the axis of the largest gage pin that will fit in the hole. The datum plane of a surface feature is the surface plate that a datum feature rests on. Thanks for watching! I have a recent video where I explain the difference between an Axis and a Derived Median Line.
Thanks for watching! I made a video recently that demonstrates the difference between flatness and parallelism at inspection if you are looking for more information.
Thank you. This was the most basic, and simple explanation of how Feature Control Frames work, or how to figure out how to set one up from the very first item, the Geometric Control Symbol. Eveyone else just places them on the screen, and then gets busy explaining what each symbol means, and it works.
Thanks so much!
I think this video is top notch . Thank you !
great video Mr. odell
Alright Prof RDO, it's 2022 and time for my annual D> review(Dimensioning and Geometric Tolerancing, is more accurate description I hate GD & T). Thanks for these current videos. Just a warning in advance you can expect to seem some rants in the comment section from me. Mostly, it's about what I see in industry also the ambiguous use of english language and "shop talk" to shortcut what should be very accurate/precise descriptions. As an engineer, I've always suspected that machine shops have a gripe against engineers and this is a very big hammer to be used to knock us down a few pegs(deservedly so, because engineers typically create drawings with tolerances that "tell" the machinist what to do...even if we don't know what to do...).
Anyways, I like what you said in the beginning that D> is a "language" that you must tolerate and learn. Step one, the terms and definitions. So, it's memorize time again. Good exercise for my fading brain cells. Keep on.
Thanks so much for the input!
I like your redefining of the acronym. I have a textbook for GD&T called “design dimensioning & tolerancing” which in my opinion is a better description than most GD&T books.
I’d get skewered in the comments if I used your common sense reordering of the letters, or I would adopt it as well. I get static when I say “datum” instead of “datum feature”.
Thanks so much for your support and I like forward to more thoughtful & constructive comments in the future.
This is a very well put together video. Your explanation is very intuitive. Great job.
Thanks!
Thank you master 👍 I'm from Turkey.
Thanks so much! I have many more videos on the topic as well. I’m thrilled to have international viewers! Thanks for leaving a comment.
How is that forty thou if its.. .02? This has always confused me.
Hi, it is because of the plus minus symbol. The “total” tolerance is .04, but it is .02 on either side of the nominal dimension. Thanks for watching!
@@RDeanOdell ahhhhhhhh I see. Thank you !
Very well explained
Thanks so much!
What makes the theoretical datum? The feature or the simulator? Or both?
Great question. The datum comes from the true geometric counterpart, which is simulated with inspection equipment. So the datum axis of a hole is the axis of the largest gage pin that will fit in the hole. The datum plane of a surface feature is the surface plate that a datum feature rests on. Thanks for watching! I have a recent video where I explain the difference between an Axis and a Derived Median Line.
Awesome video. Thank you !
Thanks so much!
How to write runout tolerance on a shaft have different diameter and totall run out
Hi, I made a video about runout tolerances addressing your question:
GD&T Lesson 5: Runout Tolerances
czcams.com/video/kiV-da6cli8/video.html
Thanks Sir
how do we determine the tolerance values for both geometric and dimensional tolerences?
That’s a great question. I’ll make a video about some examples of choosing tolerance values soon.
Nice content 👍
Great video, except that the screen went dark at 10:56.
Hi, Thanks for the support. I made a mistake in the editing of that video.
Great video, but at 6:22 seem to be a confusion between Flatness and Parallelism
Thanks for watching! I made a video recently that demonstrates the difference between flatness and parallelism at inspection if you are looking for more information.
Omg you cut your hair? 😊
This video was from a few years ago…..
Dok pehe aku
You don’t explain what LMC and MMC stand for. Was lost. Then the video just ends without explanation. Thumbs down.
"minimum material conditions," etc, I believe.
Maximum Material Condition and Least Material Condition