GD&T Tutorial 12A : Material Modifiers

[@urielhernandez6163]

Hi Palani Kailash; Excellent explanation, will you still share your knowledge according to ASME Y14.5 in its current 2018 version?

[@PalaniKailash]

Thank you Uriel I will be sharing both 2009 & 2018 Version of ASME Y14.5 in appropriate videos

[@varunhrravindra]

Good evening Sir ! A, B and C are not FOS and hence modifiers cannot be applied to them.

[@naveenkumarsubramani1655]

Hi Palani, what is the significance of flatness as a geometric control given to a Feature of Size (FOS) in the example of Regardless of Feature Size (RFS)?

[@PalaniKailash]

When controlling the flatness of the centerplane is the requirement then we can apply RFS or MMC to FOS

[@nabarajgairhe6152]

Dear Sir Thank you for the video.

[@niranjanupasani722]

As these are distances & not features of size, I dont think material conditions apply to them. We can only get their maximum and minimum values.

[@devanshtyagi1405]

Sir, they won't have any, Since they are dimensions which fits the definition of Basic Dimensions.

[@Dizaynspeed]

I also think like that

[@PalaniKailash]

these dimensions are not FOS dimensions, so we don't get MMC and LMC conditions

[@venkatshivareddy7801]

Hello sir, MMC & LMC is not applicable for this. Because of those dimensions are related to hole. If the dimensions are related to size. If my answer is wrong please help me.

[@muthuraj.v448]

Dear sir, Answer:Here not possible to give a MMC and LMC in this question. It's against FOS

[@PalaniKailash]

For correct answers to all the video questions check the below video kzbin.info/www/bejne/iaCoqHqmZtt7fZI

[@anandhubr8151]

Sir I think it's not possible to get lmc and mmc Bec it's hole dimension representation not shaft

[@mohammadshabi320]

Sir thank u for your excellent explanation.

[@PalaniKailash]

welcome

[@popatpandhare2039]

Dear Sir , please explain bonus tolerence calculation

[@PalaniKailash]

will make few videos on it soon

[@uve_viktor_doom]

Answer: material condition do not apply, as they are not FOS, thanks for the video Palani

[@sachinrath438]

UVE D why it is not FOS can u please explain

[@PalaniKailash]

it is not a regular FOS

[@DreamDynamicz]

Hi Palani Sir, Please explain the composite tolerances and datum shifts... What is free state modifier...

[@PalaniKailash]

Check this video for composite position tolerance kzbin.info/www/bejne/rXitl4hjmsSde5Y

[@umamaheswaran5819]

MMC , LMC , are pretty clear. RFS means , for the regular feature of size , only the tolerance limits , upper limit ,and limit we need to consider. MMC ,LMC should not be considered.this is what my understanding is. Can you please clarify...sir

[@jithunm5173]

Hi sir, Can you explain other modifiers also (free state,translation,statistical tolerance,tangent plane)

[@PalaniKailash]

will take some time for videos on these modifiers

[@jithunm5173]

Hi sir , can you explain All around and All over modifiers

[@PalaniKailash]

This is explained in Profile Controls Video

[@kapilmahesh708]

Why do we use material modifiers

[@helloJack22]

Can you provide a better explanation for RFS ? Did not get it .

[@PalaniKailash]

watch videos on circularity or cylindricity which is applied to RFS

[@akhilvr7342]

Material conditions are not applicable to those dimensions as the material condition remains same irrespective of those dimensional changes as per the given tolerance range. Am I right sir??

[@PalaniKailash]

check this video for answers kzbin.info/www/bejne/iaCoqHqmZtt7fZI

[@Dizaynspeed]

for the Image @4:15, why not use 25 +-0.2? If there is least and maximum limit, why there is also 0.2 tolerans Sir?

[@PalaniKailash]

There are different methods of giving dimensions, in this example o have used Limit Dimensioning, in other examples i have used Plus/Minus dimensioning as well

[@Dizaynspeed]

@@PalaniKailash Thank you sir. I though there is a special reason to use limit dimensioning.

[@RamKumar-gv2mh]

Conditions are not applicable. None of the labelled dimensions define FOS

[@PalaniKailash]

kzbin.info/www/bejne/iaCoqHqmZtt7fZI Check this video for answers

[@santhosh_kumar_R]

Rfs Is That mentioned 0.2 may toleranced with 24.80 and 25.20 ? So actual tolerance - 1) 24.60 - 25.00 2) 25 - 25.40

[@kamleshvasava7320]

They don't affect the material conditions.

[@amoghmangalam3130]

Sir please explain the answer of the question at the end .

[@PalaniKailash]

All the dimensions labelled are not feature of size dimensions, hence MMC & LMC can not be calculated

[@ArunKumar-dm1pr]

PLEASE EXPLAIN 14 GDNT SYMBOLS

[@srotadas2107]

Hi Sir, Good Evening, MMC - 14.75,29.75,10.25 & LMC is 15.25,30.25,9.75.Please let me know whether it is correct or not

[@bhuvaneshwarank7505]

Questions, A, B & C are not the Feature of Size, hence the material condition is not applicable to them. For Example, The shaft Diameter and Length of the shaft is a Feature of Size. The thickness of the material is Feature of Size. In simple terms, whatever the part you can measure using Vernier caliper with its two jaws (fixed & movable), you can assume it's a Feature of Size.

[@Rahulsharma-mw1yg]

Its irregular feature of size we can't easily measure dimensions by vernier caliper because here unrelated actual meeting envelope need, so this is type A UAME

[@deepkumarumradiya9791]

​@@bhuvaneshwarank7505 excellent explanation

[@valammadeshwaran4345]

Dear Sir- Those A B C all values are used to positioning those two holes, Hence Why don't you mention those A B &C in BASIC DIMENSION?

[@raja310]

If geometric dimensioning given to holes then those will be basic dimensions

[@venkatshivareddy7801]

MMC & LMC not applicable sir.

[@subbusubramanyam3375]

Sir why it is not feature of size

[@subbusubramanyam3375]

I got the some reasons but it's not clear

[@Swaminathan007]

@@subbusubramanyam3375MMC or LMC applied for its size (diameter of hole)..For only Position dimension as marked(A,B,C), it is not FOS and no Datum is specified in this case.

[@tonystark3858]

bcz. they are base dimensions not FOS

[@estebanrubio67]

Those are no FOS.

[@shivarajnavalba5042]

Sir Plz let me ans also bcoz we can come to know we understood correctly or not.

[@PalaniKailash]

I was waiting for you guys to put the answer in comments. Anyhow, will post the answers shortly

[@shivarajnavalba5042]

@@PalaniKailash okay tq

[@successtoaccess6960]

Hi Palani, From my understanding of the previous course, FOS is any shape (circular, cylindric, parallel) that can be measured by the caliper. How it comes to these parts are not measurable here? Is it because we are measuring a parallel side with a curved line (the hole)? I feel I got a bit confused.

[@PalaniKailash]

When the dimension gives the size of the part and in measurable with front end of the vernier caliper, then they are FOS and material modifiers are applicable

[@CarlosRodriguez-sn3bm]

MMC is 15.25 30.25 10.25 LMC is 14.75 29.75 9.75

[@PalaniKailash]

good job

[@eat.nwatch8939]

@@PalaniKailash hello sir, you said that the the dimension is not a FOS, why good job ?

[@pavan_mudkani]

nothing changes

[@PalaniKailash]

MMC and LMC does not apply to the dimensions labelled

[@yogananthyogu2081]

@@PalaniKailash sir please how we get the answer

[@sharath027]

For A MMC :15.25, LMC 14.75 .... B) MMC=29.75, LMC 30.25......C) MMC 10.25, LMC 9.75

[@PalaniKailash]

The dimensions labelled are not FOS, hence you will not get MMC and LMC for those dimensions

[@Chariparichar]

@@PalaniKailash haha good one.

[@indersidhu4646]

@@PalaniKailash haha good one sir! (:

[@Rahulsharma-mw1yg]

But sir using UAME we can measure it by vernier caliper, you don't tell about in videos FOS must be Regular FOS for finding MMC, LMC, etc you just say only FOs

[@surajkalage6307]

(1)- 14.75 , (2)- 29.75 , (3)- 9.75

[@PalaniKailash]

the question in this video is already answered, refer previous comments for answer

[@shubhamchoudhary94]

NONE

[@thirumaleshsircilla2492]

MMC is 15.25 30.25 10.25 LMC is 14.75 29.75 9.75