Note: Printing patterns from Mozilla Firefox may result in incorrect proportions. We recommend using a different internet browser, or right-clicking the download link and selecting Save link as from the menu to save the file to your computer instead, and print it from there.
There was another Online Extra for this article:
Issue 115 Online Extra
Adobe Acrobat PDF
Milling Machine Patterns and Setup
The router milling machine allows for six different gear setups to create spiral patterns (like flutes and reeds). Depending on the setup, the gear ratio, and therefore the spacing of the spirals changes. The patterns are available to download in this Online Extra. (See download link above)