Mesh subtracted from a cylinder is not smooth

[nayan-dhabarde]

Hi,

I am working on a prototype in which I need to create holes in a cylinder. Below is the original model I am using:

After using subtract I get the following output:

As you can see, the output is correct, but the surface detail is lost and the radial segments are reduced.

I have been looking for a solution everywhere and all I get is use computeVertexNormals and computeFaceNormals to make surface smooth. I have tried both of these API's along with/without mergeVertices and it still doesn't work.

Any solution?

[makc]

If I were here a year ago, you could try this.