I have a quick video tutorial which shows you how to convert any font of your choice into a stencil version - it's super easy just cut a little notch out to create the bridge from the background to the inside of the letter.
Free Font Download Called 'Stencil Silhouette UK'
I decided though, that I'd like to have a shot at converting a full font into a stencil version and then create it as a proper installable font. I managed it with the help of the free software Inkscape and Glyhr Studio. Here's the font, it's free for download here