Paper Engineer Rob Ives is in the midst of creating another one of his zines. This one will take the same format as previous zines -- six pages, each featuring gear-based facts including perhaps worm gears, bevel gears as well as gear trains and the standard gears featured here. Each page will have a link to the downloadable, printable, make-able version of the featured gear project ready for you to make. Check his blog regularly for updates
Here is the post about the gears set shown above which will be the first part of the zine. This project includes two interlocking gears, one with eleven teeth, one with nineteen teeth.