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Anonymous
688 Vistas, 8 Respuestas

Boolean subtract - Holes through multiple materials

I have a sandwich of materials of different materials and hence different colours and wish to make a hole through them. For an example i have a sandwich of three sheets of material, red, green and blue through which i want to make a hole.

I create the three sheets, as boxes, on one layer and change the colour property of the layers to red, green and blue. I then create a cylinder. The model is shown as, "basic sandwich plus cylinder".

I undertake a boolean subtract of the cylinder from the three layers and the result is that the three sheets become one one blue solid with a silver hole, the colour of the cylinder. See "Sandwich with hole". From searching the web this is what i would expect but is not what i want.

I want the three sheets to retain their own properties and the hole in each to be the colour of the sheet.

The work around i have is to create three cylinders each the same colour as one of the sheets and undertake three boolean subtracts. 

The problem i have is greater than this as i have an array of say 30 holes through a sandwich of five different materials. My work around takes ages as i have first to copy the array to the same location 4 times, explode the array, and then perform 150 boolean subtracts!

There must be a simpler solution as in the aerospace industry this must be a daily task. 

Any help appreciated.

Bob