Dremel rotary tools are handy. Some of the attachments are convenient. [vreinkymov] felt the convenience wasn’t worth the cost, so he decided to make a Router Base for his Dremel. These types of attachments are used to hold the Dremel perpendicular to the work surface.
Underneath the little nut/cover near the spindle of the Dremel, there is a 3/4″-12 threaded feature used to attach accessories. A quick trip down the hardware store’s plumbing aisle resulted in finding a PVC reducer with the correct female thread to fit the Dremel. Once on the rotary tool, the reducer threads into a PVC nipple that is glued to a piece of acrylic. The acrylic acts as the base of the router attachment.
Dremel’s official router base is called the 565. It slides up and down to adjust the bit height and locks with a thumb screw. [vreinkymov]‘s design utilizes the threads of the reducer and nipple to allow height adjustment. If those threads get a little loose, it would be possible to drill and tap a hole for a thumb screw that would prevent the reducer and nipple from turning in relation to each other.
Those with access to a 3D Printer may be interested in this router attachment hosted on thingiverse.com. The height is not adjustable but otherwise it appears to be pretty nice.