# weird ambient occlusion shadow

i've been working on a small oven model and i have a problem with the AO bake, for whatever reason there is a big round shadow in middle of the front and i have no ida what causing it.

Here is a screenshot of what i mean

and on the rendered ao texture

any idea whats happening?

edit: i'm using blender render with approximate setting

edit2: blend file

• something burning in your oven? :) Check for hidden geometry – Bithur Mar 15 '15 at 19:26
• Are you using BI or cycles? To me it looks a bit like the artifacts you see with approximate gather in BI. – gandalf3 Mar 15 '15 at 21:00
• Did you change anything in world settings? The attenuation and falloff? – Denis Mar 16 '15 at 0:07
• Could you maybe post a .blend file? – TARDIS Maker Mar 16 '15 at 0:37
• you can use this link to upload a .blend file – Bithur Mar 16 '15 at 16:05

For me it looks like a somehow artifact of Approximate method of calculating AO. If you slower Error value in Approximate settings, you will likely get rid of this effect (and increase your baking time):