Now I make Amazing 2 in 1 router jig base . This jig can make for fence make slot with max 320mm distance from edge and make circle guide max 350mm, simple but very usefull .JIg is made from HMR (High moisture resistant) see detail on this link and a variety of other small components detailed in the article and the video.
This woodworking jig is a great way for the the beginner woodworker to make easy circles and easy make slot or cut using router or palm router for their projects.