Hi, I would like to know if any of you know a easy way to make multiple holes (ex: 35 x 70) without makig the part heavy as hell?

I need all the holes to be represented cause our laser guy will not redraw holes for us.  I currently am considering doing only the sketch  in the 3D and copy it in the apropriate view on my drawing.

If any of you know a better way, please let me know cause de refresh time is killing me right now.

thanks

Fred......