Informative, thank you for sharing your knowledge.

very very good efforts

Keep going. video was 2 good

At 2:58 after I saw the function of this block and the fittings and hoses, I'm going to guess. The reason for no GD&T is because this is a single component unit that does not assemble with another part except for the bottle(which we can "assume" will be consistent because it's a standard part that is highly mass produced, plus we all have real world experience with plastic bottles...I have yet to ever find one that leaks due to bad thread issue)

Maybe it might have been a good idea to have cut a recess for the O-Ring approximately 1/3 the thickness of the O-Ring in depth so it can't easily kink or collapse in when the bottle is tightened. Other wise I think Space-X is going to Love It.

This is actually quite helpful. Next time I see a drawing of a "cover" with a GD&T symbol of Profile of a line or surface, I am going to crumple that print up or "delete" that drwg file. It makes sense now, if that feature is not going to mechanically mate with another part...you don't need GD&T. Something the GD&T instructional/gage maker cottage industry doesn't want to speak too loudly about.

If you make it yourself, you barely need dimensions. Simply saying "well, how far off can it be anyway?" Is not communicating it to a manufacturer. GD&T will clearly communicate this.

👍

SHORT VERSION: You do not need precision. Why not use a compass and ruler?

Sir can you please guide me on how to apply tolerances on pressure vessel drawings, any book or website you can recommend will be a great help. Thanks

@saurabhroy7100

3 жыл бұрын

Which tol you want to use that is important and also DFA too I feel you need position, perpendicularity,MMC,MMB most.

This is an odd video- you could also use "When You Don't Need a Drawing" as the title. The purpose of GD&T is to remove all the "if" statements and assumptions you're making. Someone else could make a part that meets the requirements as shown on your drawing but doesn't actually work and they would have technically made an "acceptable" part. From a designer's perspective, GD&T is required on all drawings to fully define a part. That said, parts are commonly made from drawings that don't use GD&T because it is seen as overkill i.e. it is reasonable to expect the part to be function correctly based on the known tolerances and limitations of the manufacturing processes involved.

I love the video but the dimensioning on this part is horrible.

So if you're in your garage making your own parts from your own drawing with your own process for a DIY project then you don't need GD&T....okay. When you, the individual, encompass design/manufacturing/inspection/end user not only do you not need GD&T, you don't even need a drawing at all! You could just work straight from your CAD model and nominal dimensions. I don't see the point of this video.