Anodizing involves suspending parts via a “jig” or “rack.” This will leave marks on your part where anodizing wasn’t possible. If there are areas on which you can’t accept “jig” marks, please remember to include a technical drawing indicating these areas. Anodizing insulates your parts, reducing their conductivity. Masking is not required by default, as anodizing doesn’t raise the thickness of your part significantly. Remember to indicate in your CAD file whether you want specific part areas to be masked or plugged.