yang686526

gd&t question for european drawing
i am trying to establish the correct meaning of the gd&t symbols used in a dutch drawing.
i'm not sure how old the drawing is, but the gd&t symbols don't seem to follow the current iso 1101 standard.
can anyone help me interpret the gd&t correctly?
file doesn't apper to open, doesn't have a . extension which may be problem.
kenat, probably the least qualified checker you'll ever meet...
one more try
still not working, can you describe the symbols?
"art without engineering is dreaming; engineering without art is calculating."
rather than keep posting non-working attachments, try downloading it in when in the preview. if it doesn't download there it won't download here.
just testing the attachment function.
it works!
how are you selecting the file to upload?
are you just typing in the location from your machine or using the "...or upload your file to engineering.com" link?
the latter one works.
sorry to mess you all about, but i've finally managed to upload the file.
just for future reference it was the file name that was stopping it, i had called it gd&t and the upload didn't like the & bit.
anyway, can anyone help me interpret the gd&t correctly?


the drawing attached dosnt have any gd&t.
it seems to have lots of linear dimentions in both metric and imperial.
what have you dificulty in interpreting?
jason
ok, so the drawing doesn't use the current standard symbology for gd&t, at least that i'm familiar with from the uk (bs/iso) & us (asme). however it does appear to have fcf with letters.
i'm guessing the letters are meant to be instead of symbols. not sure if it was an old dutch thing, or maybe a software translation error.
i will say this, datum b dosen't appear to be a valid datum, at least it's not called up how i believe it's meant to be.
the 'c' looks like it might be flatness, but that's just a guess.
the 'f', no idea. i was thinking position but i don't think that works.
sorry.
kenat, probably the least qualified checker you'll ever meet...
catia maps 'f' as parallel, and 'c' as flatness.
that happens when the font is substituted, which occurs when you do not have the identical font loaded on the system the document is opened on.
caution: while most gd&t fonts use the same keyboard mapping, it is not standardized that i am aware of. one of the fonts i have has 'b' as perpendularity and 't' as total runout, where the other (catia) list's 'b' as square and 't' as perpendicularity.
thanks to all of you with helpful comments, the dimensions have been changed to question marks "???" on purpose as i didn't want the original dimensions released into the public domain.
however it's interesting to find out about the catia mapping process, which makes sense about how these feature control frames may have ended up with letters not the normal symbols.
what i would like your opinions on now are:-
if indeed the 'c' represents flatness and the 'f' represents parallel then would the drawing "work" from a common sense point of view.
thanks once again to everyone for you're continued help.