How to Apply GD&T Position Tolerance to a Square Hole Pattern

[@yonatanshenhav1208]

finally, a video exactly the length it should be. usually they spread it to 35 minutes, and this guy does it in 3 without leaving anything. good job sir.

[@finnrock5558]

I hit "like" after I saw that your intro was less than 1 second. Excellent video. Clear and we'll executed. Keep it up.

[@Hallowed1907]

So so so so to the point and accurate like a sniper.....kudos

[@ctsugusergroup1397]

It would be nice for users to understand that the 0.014 positional tolerance has a meaning and it’s not just pulled out of the air. It is the hypotenuse length of the 0.010 x 0.010 triangle.

[@Titanpenguin]

so a machinist calculates that. I've never seen position tolerance

[@ctsugusergroup1397]

@@Titanpenguin I'm not sure I understand what you've said Jerry. The .014 positional tolerance was acheived by taking a normal square tolerance zone of plus/minus (in ths case .010) and since GD&T allows for a circumscribed circle on that square, the diagonal of that square would be (rounded) .014

[@Titanpenguin]

@CTSUG User Group but I'm saying I as the machinist would still have to calculate the plus and minus in order to create the piece. I'm assuming I cannot take calipers and measure a positional dimension and go.."oh .014". I'm not trying to sound bad it's just trying to get my thoughts across

[@edgarcarrillovazquez8576]

please please please!!! More videos, i love your style

[@KKLL28456]

This content is good stuff, you are better than any of the engineering professors I’ve had. Delivery and clarity 👌

[@sergeydukman5832]

Amazing video. Hope you will make more of them including coaxiality ets.

[@MansterBear]

So on the linear dimensions, you said there is no tolerance stack up to consider? Would it be 2.000 + - 0.014 and 3.500 + - 0.014?

[@marcobenor3087]

Great explanation. Thanks for the help.

[@kuraigasone]

Hello Caleb I have one question you are always saying perpendicular to first datum but there is no sign about that just position tolerance on the board these to are same thing ?

[@MrSipi1988]

When you use 4x for the hole diameter dimensioning. Should I need to use it for the geometrical tolerancing either? I mean there is no 4x before th position tolerance. It is clear in that case that the position tolerance meant to all the 4 holes, but at some cases the holes act as datum , in other words the holes define the datums, so if I have holes with same diamater and they are not datums I need to mark individually all the hole's diameter and geometricla tolerances. Am I right?

[@zorkan111]

If I'm not mistaken, A, B, and C are written in the separate rectangles if order matters. Why would the order of B and C matter here?

[@pawanchand3282]

We are not specifically mentioning tolerance for perpendicularity with respect to datum A. So, is it still necessary to mention primary datum A in the feature control frame? Thanks in advance. Your videos have been really helpful.

[@seanb32000]

Can you explain how to use Composite Feature Control Frames?

[@GaryKavanagh-wl7lh]

Great videos thanks.

[@Titanpenguin]

ok so how does the machinist apply position tolerance of .014. is that a cmm measurement

[@agave.journey]

Could you make a video on how to use GD&T on a similar pattern of holes but I want to control the distance between each hole. So for example I want to locate the first hole on the bottom left but then each subsequent hole I want them to have a true position between each hole of .xxx.

[@sean9267]

Great video. Should there be a 'thru' callout on the holes?

[@StraightToThePointEngineering]

Hi Sean! I like your username! It's basic and "Straight to the Point"! Short answer, my part detailing view would have greatly benefited from using "THRU" after the hole callout and I will try to apply that more consistently to my future examples! So thank you for the very constructive feedback! The longer answer is, as usual, it depends. If you look in the ASME Y14.5 Dimensioning and Tolerancing standard under the section covering "Round Holes". It states that "if it is not clear that a hole goes through, the abbreviation "THRU" follows a dimension". However, back to the point you were maybe trying to make, if it doesn't hurt to add "THRU", then why not just to ensure there is clarity on your drawing. So point well taken! One last thing, I am going to try to start understanding a little better who is watching and what their technical needs are. With that in mind, if you get a few seconds, could you reply and let me know what job you do and how GD&T is part of your work/hobbies/passions? Thanks again for watching and for providing the very useful feedback Sean! Stay safe and healthy and have a fun day if you can!

[@dantecastillodelasfuentes6404]

Gooood Upload more videos you’re the best

[@StraightToThePointEngineering]

Hey Dante Castillo de las Fuentes!!! Thanks for the support man! I just uploaded another video so check it out. I am going to re-start by covering all of the basics and increasing the complexity of the topics as the channel progresses. I hope I continue to see you in the comments section in the future! Stay safe and healthy!

[@Dizaynspeed]

What does M mean on the GD&T?

[@abhishekavasarala8006]

MAXIMUM MATERIAL CONDITION

[@Dizaynspeed]

@@abhishekavasarala8006 What is it?

[@farloux]

What do you think about using TYP instead of the #x quantity?

[@StraightToThePointEngineering]

Hello and Good Morning Mark! Thanks for the great question. For all of my designs/drawings I try to conform to the ASME Y14.5 drawing standards and conventions they provide in Section 1. Specifically, in Section 1.9.5.1 Series and Patterns on page 23 of the 2009 version, the use of "X" is explained and various example figures are referenced. So for me, I would stick with the use of "#X". The use of "TYP" is typically something (forgive the pun, I can't help myself) I've seen in weldment drawings that are utilizing AWS (American Welding Society) drawing callouts. From what I can remember from their standards, "TYP" is placed in the tail of the welding symbol which is where notes are located. It's meant to specify to the welder that they should apply that particular type of weld to all joints that are similar to the one the welding symbol is pointing to. In other words, that weld will be "typically" applied to any similar joint in that drawing view and/or weldment assembly. I hope this helps you decide but just remember, as long as the technical information and part requirements are clearly and unambiguously conveyed in your drawing, your methodology can have some variation to it. Essentially with drawings, the end destination is what is most important, not necessarily the journey. Just a note, if you are sending out drawings to a long-term manufacturing partner and they like what you are placing on your drawing, simply make sure there is written agreement on your specific drawing conventions and then happy designing! Have a wonderful Sunday and thanks again for adding value here in the comments section with your thoughtful question!

[@saranrs7027]

Awesome video bro. Requesting u to prepare videos on all GD & T concept....

[@StraightToThePointEngineering]

Hi there Saran! I have posted a few more videos since your kind comment and I am working hard creating more. Keep watching and thank you for participating here in the comments section! Have a fun rest of your night!

[@airlanggak5391]

thanks so much man!

[@srkumarful]

Rounded M ??

[@Rashidshalchi]

Ram Kumar maximum material condition

[@srkumarful]

Ok thank u very much

[@StraightToThePointEngineering]

Hello Ram, the circle with the M inside is what we call Maximum Material Condition or MMC. FYI, I will be uploading a video describing how MMC works very soon.

[@StraightToThePointEngineering]

Hi there Ram, I have uploaded my video on how MMC works with Clearance Holes so check it out! Have great rest of your day!

[@srkumarful]

What’s meaning for that M ??

[@juancanedo9766]

Ram Kumar maximum material condition (mmc)

[@mrdiv8418]

Great!