I have designed a part in the past that I didn't draw that is a step broken cone.  The base material used to be 1/4'' 304 perforated sheet but we were having trouble getting the material and it is expensive so I designed the cone to be made from 1/4'' 304 sheet and to have the hole pattern simulated on the sheet with some other patterns as well which were needed to update the part.  I have the cone drawn with the step brakes, however getting the patterns on the cone and making them cut the material has been a challenge.  I used offset entities to create the current pattern when it is unfolded, however it doesn't want to cut those areas.  Everything in the 4.00'' areas would be simulated perforated.  Does anyone know a good way to do this without manually adding in a bunch of holes?

Thank you,

SS