What is the smallest object I can draw and "SEE" in AutoCAD? I was hoping to prove a point in my introductiory AutoCAD class, but it appears I have been lying!! I tried to draw a cirlce with a diameter of 1.24E-10m. The dot shows up, but I cannot zoom to it. I tried using an enormous zoom scale, but did not have any luck. I am almost positive my instructor introduced the capabilites of AutoCAD by drawing a full scale helium atom, and that was release 14. Is this still possible? Obviously the atom can be drawn, but what are the zoom limitations? Thanks.
when yo udraw an atom (or parts of it) then set the UNITS of your drawing to anything else than meter. Set it to nanometer and you can create a circle then with 1.24E-01 (instead of 1.24E-10m) and a circle with 0.124 is visible and zoomable.
Alternativly also Ångström could be used for UNITS.
- alfred -
It doesn't do much! It ignores the object. I have tried regen, regenall, zoom by extents, zoom by center, and zoom by scale at each level of the zoom. They all get stuck with the same zoom message.
I have a feeling you may be right. I will do some more reading and circle back to you. If I use your method, even though the scientific units are "unitless", I feel as if I am not drawing to actual size. But in reality I am, just not the scale I want! Stupid rabbit hole.
You are running into thelimitations of floating point arithmetic as implemented in compouters. Check google for more information on 'floating point arithmetic'. You just need to rethink what your units are, whether parsecs or angstroms is your choice, and a factor that determines how far you can zoom in or out.