ASME Y14.5 .. clarification

Hi everyone just finishing the final block of my apprenticeship in class. We had a class that focused on GD&T .. the teacher was clearly under qualified to be teaching the subject. For the sake of my own knowledge I am doing some research myself. I ended up finding a free copy of Y14.5 1994 pdf.. I know there was a revision done in 2009 and I have an article on the changes made. Looks like a new Revision just came out last month but finding any reliable information on that is not overly easy just yet. Due to text books often only scratching the surface I would like to find a reliable reference. For those with experience with GD&T is it worth my while to spend the money on buying Y14.5 2018 from ASME (250$ ish) or will I be okay with 1994 revision and some articls on the changes made in the 2 new revisions?

Thanks!!

ryanbcnc said:

Hi everyone just finishing the final block of my apprenticeship in class. We had a class that focused on GD&T .. the teacher was clearly under qualified to be teaching the subject. For the sake of my own knowledge I am doing some research myself. I ended up finding a free copy of Y14.5 1994 pdf.. I know there was a revision done in 2009 and I have an article on the changes made. Looks like a new Revision just came out last month but finding any reliable information on that is not overly easy just yet. Due to text books often only scratching the surface I would like to find a reliable reference. For those with experience with GD&T is it worth my while to spend the money on buying Y14.5 2018 from ASME (250$ ish) or will I be okay with 1994 revision and some articls on the changes made in the 2 new revisions?

Thanks!!

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i would not be spending money. many companies (you will work for) have books or electronic version employees can read for free. usually a little web searching you can also find free info. most companies you work for are going to help you with gd&t info and training for free.
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its like buying $2000. worth of tools and then you work for a company that supplies all tools for free and doesnt even want to to bring in any tool boxes that take up valuable shop space. just saying a lot of what you need is supplied by who you work for. even books many companies will buy books for you if you request a book on the latest version of something needed for your job.
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you want something to read when you work for company often a cnc will have 1000 to 3000 pages of operator, programming and maintenance manuals on it. usually take some time to read that.

The company I work for does not have any copys of the ASME standards. More of what I am asking is will I be able to get by with a copy of 14.5 1994 and a write up on the updates in 04 and 2018 or are the changes so drastic that 1994 is obsolete?

ryanbcnc said:

The company I work for does not have any copys of the ASME standards. More of what I am asking is will I be able to get by with a copy of 14.5 1994 and a write up on the updates in 04 and 2018 or are the changes so drastic that 1994 is obsolete?

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your engineering and or inspection department if they have no copies should be able to buy a copy. usually if you ask boss and explain the need they usually approve buying books. dont expect it done in a hurry.
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changes in GD&T if you asked 1000 machinist wouldnt surprise me if 99.9% couldnt tell you difference in GD&T over the years. sure many got a chart on symbols and i got a small book from my company on it for reference. not very often i need it but i got it if needed. many companies offer GD&T refresher training every so many years cause many of their employees dont use it very much
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my point is i wouldnt buy a personal book on it. if i needed book i would ask my company to buy it. often at beginning of book they tell whats different in the newer version.

go on m,azon and buy a current copy of any GD&T book- a good one will cover all the important changes between different standards.

This depends what version the drawings are done to. Your title-block should say. If the drawing calls out ASME Y15.5-2009 then you really should have that one. If your employer doesn't have it request it w/ the justification included in the request. $250 is cheap for a shop big enough to care about proper GD&T.