Problems with Patterning Holes

randy_young

Hello All,  

I'm attempting to pattern an unknown number of linear holes in a parametric part based upon the object's height (holes 2 inches apart, beginning and ending at least 4 inches from each end of the part.  The math is simple : floor((#height-8in)/2) would give me the number to duplicate, but I can't seem to get this to work in a variable or propagate it to a linear feature with hole.  Part of my problem seems to be that I'm trying to turn an object in inches into a unitless number but I can't find a function to allow that.    I'm probably doing something stupid.  Can someone direct me to the right way?  

Thanks

_anton

You can just divide by a length to remove units.

(#height - 8in) / (2 * inch)

eric_pesty

Yes, I think you even just divide by "in".
You could also use the excellent "linear pattern plus" custom feature that lets you do this and more without having to do the math.
https://cad.onshape.com/documents/1196579d97167d7a348652a9/v/4c8563e8233b4395cd866e1a/e/eded24da9efe0d8bf1929410

randy_young

Duh.  I knew it was stupid!   Inch / Inch = 1 .  Thank you both