need help with boolean tool

I am a beginner in blender and I have problem using boolean tool ,when I apply boolean with difference option to any object it provide the expected output as it should be in 3d model but when i render that model , those faces where I applied boolean does not look proper . Can anybody help me to solve this problem, ?? thanks in advance…:slight_smile:

Using the boolean modifier is not a magic bullet. Depending on your model you may have to manually clean up the resultant mesh.
Also see http://cgcookie.com/blender/2011/01/28/tip_boolean_modifier/

maybe a problem of normal direction…