EDM that corner out, money is no problem on this job.How do you machine the 2 corners between the 2 ribs ? You will necessarily have a round fillet somewhere.

EDM that corner out, money is no problem on this job.How do you machine the 2 corners between the 2 ribs ? You will necessarily have a round fillet somewhere.
Hmm...well the exercise is taken from a college drafting text, the seventh printing in 1970, of a book originally printed in 1936. Maybe they had manufacturing techniques like the ancients used for Stonehenge, Machu Picchu, and the pyramids of Egypt.
EDIT: and the model is actually wrong, doesn't correspond to the exercise.
Please enlighten us.RatonLaveur wrote: ↑Mon Apr 20, 2020 10:13 pmI agree on the model not being an exact replica of the exercise.
Is this a metric joke?RatonLaveur wrote: ↑Mon Apr 20, 2020 10:13 pmMy big issue with this drawing is the really weird distance call outs... they are all off by a factor of 25.4 exactly while the angular ones seem ok.
My dear, look carefully at the left side of the part. One feature is missing (bottom left corner, milled flat corner under the part) and bottom right corner (face containing hole should not protrude further than general left face).drmacro wrote: ↑Tue Apr 21, 2020 12:04 am
Please enlighten us.RatonLaveur wrote: ↑Mon Apr 20, 2020 10:13 pmI agree on the model not being an exact replica of the exercise.![]()
Is this a metric joke?RatonLaveur wrote: ↑Mon Apr 20, 2020 10:13 pmMy big issue with this drawing is the really weird distance call outs... they are all off by a factor of 25.4 exactly while the angular ones seem ok.![]()
Or not? I am sure there are not only hand chisels and if it is really needed it could be brought down to atom sizes - no real world rounding/chamfer...RatonLaveur wrote: ↑Tue Apr 21, 2020 5:03 amthe machining process will necessarily leave me with tool-induced fillets or chamfers
the dimension 2 3/8-th (what an unpractical way to note dimensions !), the lowest on the paper, is not respected.drmacro wrote: ↑Tue Apr 21, 2020 12:04 amEDIT: and the model is actually wrong, doesn't correspond to the exercise.Please enlighten usRatonLaveur wrote: ↑Mon Apr 20, 2020 10:13 pmI agree on the model not being an exact replica of the exercise.
And, that is exactly why I ask others to look.Zolko wrote: ↑Tue Apr 21, 2020 10:38 amthe dimension 2 3/8-th (what an unpractical way to note dimensions !), the lowest on the paper, is not respected.drmacro wrote: ↑Tue Apr 21, 2020 12:04 amEDIT: and the model is actually wrong, doesn't correspond to the exercise.Please enlighten usRatonLaveur wrote: ↑Mon Apr 20, 2020 10:13 pmI agree on the model not being an exact replica of the exercise.
Haha. The proponents tend to say that fractions are awesome. To each their own.
Our pleasure. It's fun and these exercises can only improve the freecad community.