There are Techniques which can be used with a router and are widely written about in books and articles, routing technique cover a wide range from grooving to trimming, one of the techniques that will be d explained is Pivot Frame Jig.

Pivot Frame Jig

Many if the work which can be covered by a circular and ellipse trammel can be combined into a single jig such as a pivot frame jig.

With this type of jig has many routing operations can be undertaken, these include planning, template routing, ski frame carving and trimming work. The pivot frame jig can also be used in such application as decorative designs and wide variety of woodwork projects.

For circular an ellipse cutting the can be accomplished using the router mounted in a fixed position, from either the above or below the work piece. For these applications the wood is rotated anti-clockwise in a router table set-up and clockwise when the router is mounted in the overhead mode. The work piece can even be motorised, and index points around the jig add a host of other decorative possibilities unique to this set-up.

Even from this small tit bit of information one can see that a pivot frame jig is a versatile machine and should be in any DIYs workshop. As with many techniques time should be taken to understand in and out , before venturing into woodwork projects before reading or even getting trained experience , from a pro .