3D CAD Product Drawing for manufacturing purposes

Information for the business: We promote & supply UK patented & Other DIY Products
Industry: Business
Design details: A wallpaper trimmer tool that looks like two 12" standard rulers connected to each other at each end forming a 'V' shape. At the bottom of the 'V' shape is a slit that facilitates a standard Stanley knife blade. The blade will sit in a small square shaped box housing that mounted on small springs either side of it. The housing must fit into the 'V' with a retaining guide channel at the top of each 'V' (like and overhang to guide the box housing). The box housing must be removable, fitting into a small locking mechanism (like a car backing into a garage or parking space. In essence the product will be able to hold wallpaper in place and cut it in a single movement.
Target audience: Professional wallpaper hangers & DIY enthusiasts
Ideas for the visual style: simple v shaped guide with a spring loaded mounted box fitment that houses a stanley knife blade
Urls to draw inspiration from: http://youtu.be/o1nHORYkuEg
Extra notes: The simpler the better. Were looking at 4 elements. Dimensions are available if needed.