Is it good to add centerline in non-cylindrical part for using as a line of symmetry just for reducing dimensions in the part. Thanks in advance.
I used for work for a company where every drawing was size A (fits in a binder). Fortunately many of the parts were symmetric and we took shameless advantage of centerlines to reduce the number of dimensions needed on the drawings. I would make sure that your "audience" is familiar with, and accepts the practice. I've worked with people who were quite opposed to the idea, but at that company it was OK.
I don't recommend this as a standard practice, but we often would use a centerline on "nearly" symmetric parts too, and put a note on the non-symmetric feature(s) "Part is symmetric except for this hole (notch, tab, whatever)". Again, that shop did not object to the practice. On revisions where a simple feature was added to one side of a part with a crowded drawing, being able to get away with that could be a real timesaver.
centreline isn't only for cylindrical parts, in this case it actually shows that this part is symetrical about the centreline.
It also means that you only have to do half the modelling work, and if you're using the symmetry constraint it means you know this featiure will remain symmetrical if you change one side.
Thank you Erik. I was looking for such reply.
I worked for several companies that printed to 8 1/2" X 11", but we used up to D size formats. Then again, we had some large parts. If you're only making small parts, then I guess only using A size is okay.
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