format of fractional inch dimensions

[Jim McKim]

Is there a way to contol the round-off resolution of dimensions if you are using fractional inch units? I would expect it to be a formatting function, but Format number of decimal places does not change anything on a fractional inch dimension. Dimensions display to the nearest 64th of an inch, or 32th, 16th, etc.

[tom kirkman]

We use the following command

(LISP::SETF
(DOCU::UNIT-FORMAT-DEFAULT-SETTING-FRAC-FORMAT
DOCU::*DEFAULT-UNIT-FORMAT-SETTINGS*)
16)

This will round dimensions to 1/16. Substituting 8,32,64 will round to 1/8, 1/32 and 1/64 respectively.

Regards

Tom Kirkman

[Jim McKim]

Thanks, Tom.
That works great for setting the default. How the heck did you figure that out? I don't see anything in the help files on fractional dimensions.
Now, does anyone know of a way to change the format of a fractional dimension AFTER it's been created?

[gmatelich]

Am I limited to 64ths as the smallest fractional unit? I am using an 11/64 diameter end mill and want to call out the radius it cuts as 11/128, but it's being round up to 3/32.

I've tried
(LISP::SETF
(DOCU::UNIT-FORMAT-DEFAULT-SETTING-FRAC-FORMAT
DOCU::*DEFAULT-UNIT-FORMAT-SETTINGS*)
128)
but it doesn't seem to take.

[Wolfgang]

11/128: no way.

Limitation in Drafting: online help says: The 'number' in the non-metric units specifies the denominator to be used for the dimension value (2, 4, 8, 16, 32, 64).

regarding: "How the heck did you figure that out? "
attached is a screen shot showing V15 default settings browser.