Thanks Burunduk, funny I can't find that method in my BS 8888:2020, even although it does discuss situation feature modifiers. Maybe I will have to get my hands on ISO 1101:2017.
Thanks 3DDave, the mating part is actually a flat surface, so kind of like a slot, which is why I could afford to open up the vertical tolerance for the pin hole.
I have a related question if nobody minds. One way I *would* like to relate the different sides of the plate is to have the position of dowel hole datums closely tied together in the degree of freedom they control, the x-direction. However I do not want a super tight y-direction tolerance and I...
Thanks pmarc, that makes sense, I can see how the linear dimension is ambiguous.
Is defining the bottom surface, one side, and the back surface as datums the best thing to do? Those surfaces are not particularly functional. From a function perspective wouldn't it make more sense to define the...
Thanks for all the input everyone, especially 3DDave. Good to know I wasn't totally barking up the wrong tree with my approach. I had just never seen a drawing with so many datums before. I guess most examples in standards and training are kept minimalist.
To try to clarify design intent, The...
Hi everyone,
Its great all the knowledgable people on this forum who are happy to help others. Hopefully one day I will be in a position where I can do the same.
I'm a bit stumped trying to tolerance a drawing I am working on, in my last job I thought my GD&T was passable but either the new...
