I have struggled with understanding the purpose or meaning for adding the MMC symbol on the feature control frame. Your analogy really opened up my mind.

THIS IS WHAT school is missing. My god. you made this easy.

Your videos are the best explanations I ever saw for Feature Control Frames, Maximum Material Condition, and general about GD&T. Really Thank you!

after searching online for some way of learning GD&T. THIS GUY IS A BLESSING!

@shaikameershameer7150

3 жыл бұрын

Lot of blessing.

Thxxxx

Nice

Wonderfull

God bless you.

Hi Quint. Another great video. I have been trying to learn GD&T for a while now. Let me ask you. When you put a position callout on something like the wooden peg. From what I know about perfect form at MMC (Rule 1), what is it that we're gaining bonus tolerance for with the peg? Would we need to put a datum on the bottom face of the peg, for example, and put that datum in the position feature control frame to make some sense of the position tolerance? I guess what I'm asking is, if the feature control frame for your peg's diameter does not have a DRF, what would it be specifying?

Around 4:25 you seem to be saying the value that replaces the word SIZE +- AND the red dot number should be exactly the same (the size of the dot). So if you have a .25 in hole, the text on top of the FCF should say something like .25" +.005" -.005" and the red dot should be replaced with .25. Is that correct?

Like the DART. 🎯

You said that any deviation (+/-) on a target diameter ADDS a bonus tolerance. What makes me confused is: how does minus (-) tolerance ADD a bonus?

@entropyz5242

4 жыл бұрын

The explanation you gave here clears things up, but at 6:43 you say anything that gets added ( you point at the peg) also gets added to the bullseye. If it’s a bigger peg, shouldn’t you take away from the tolerance?

At 6.45, your finger movement should be showing as decrement ( not increment) as it is a peg (shaft).Am I right?

@satishinamdar

6 жыл бұрын

Thanks for your clarification.I think I am too critical .Others may not .What I appreciate that you have responded positively.Your videos are very good. I learnt a lot and continue to see your videos.Let the video be as it is.Don't worry.Not a big issue :)

Hey

1 person still uses conventional tolerances

Your videos are an insult to my intelligence, since I had a good mathematic understanding of dimensions and tolerances even before I started Machining. Next time don't assume your viewers are idiots, and simply give us all of the technical informations without making comparisons to simple objects, like we are some kind of mental toddlers.

@marekjanik9962

5 жыл бұрын

@@quintgdt8751 Fair point. You do have my respect for your devotion to teach this content, as you have explained in your reply.

@punkisinthedetails1470

4 жыл бұрын

The point Quint is or has made is all the concepts apply regardless of the specific dimensions. Including arbitrary example dimensions are meaningless and cloud the main topic of conversation. If you are already well versed in GD&T then you would have little to no need for almost any tutorial? Why watch an introductory guitar lesson and then say you have years of experience and complain the level of the video isn't useful or challenging. The way Quint has explained GD&T here in all of his videos is the most efficient amd clear way I have ever seen it explained, period. Pretty much all GD&T instruction is dry, labored, and leaves students with endless unanswered questions because it is learnt cook book style or with too much math. Laying the bullseye next to the peg to show the size of the hole brilliantly demonstrates mathematically what the size will be. If you add actual numbers on a board that it harder for almost anyone to keep up with and doesn't relate directly to the actual holes in the physical material. Lets keep GDT instruction agnostic as far as possible in terms of units, sizes, manufacturing methods, materials, industries and so on. The props used in the videos are awesome and way more compelling to watch than a 3D CAD session. There is variation in how people learn so please be tolerant ; Rant over.