Get surface area in LISP

Welcome! 

The get_vol_prop function will also give you other measurements (including area). 

There is a default "rough" tolerance (not sure what that value is) which is used if you use the syntax:

(get_vol_prop :for_part mypart :area) 

-- this assumes your part has been assigned to the variable mypart

Similarly, you can get the area of a face using

(get_vol_prop :for_face myface :area) 

To specify a tolerance, you just need to add a couple of parameters (in this case using a 5 percent tolerance):

(get_vol_prop :for_part mypart :tol :percent_tol 5 :area) 

As you noted above, you'll need to wrap those calls in (sd-call-cmds ...  

I hope this helps! 

andy