X-Acto X2000 Cap

This is a cap for the X-Acto X2000 Knife (http://xacto.com/products/cutting-solutions/knives/knives/X2000-Knife.aspx).
Note: This is not the common X-Acto Knife. This one has a rubberized coating and is thicker, so the cap is not compatible with the common X-Acto knife.
The Solidworks source file is included for download.