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February 2009 Archives
N-Compass Router Jig
The N-Compass router jig is a precision compass tool designed for cutting accurate circles and arcs. It has the ability to cut a range of diameters from very small radii to very large radii, simply and hassle free.
The router attaches to the compass jig using its base plate guide rod holes. The cutting radius is set using the router base plate's guide rod locking pins which can then be finely tuned using a Vernier micro-adjuster.
How many different ways are there to cut a circle? Too many, and most of them are time-consuming, require quite a few steps, and the sacrifice of a substantial amount of material. Even the most obvious non-router technique (rough-cutting a circle with a jig saw and then using a jig with a belt or disk sander to true-up the edges) is surpassed by using circle template with a pattern-following or flush-trimming bit, so why not just cut the primary circle with the router and get that crisp, finished edge in one step without all the hassle? The answer before the advent of the N-Compass would have likely been "because by the time I waste the time and a piece of wood to make the trammel arm I could do it more efficiently another way," but not now. It's not uncommon to have the N-Compass installed on the router and set to length in well under a minute, and without dulling your bits and blades!
We also carry the excellent router guides by Jasper Tools:
The N-Compass router jig is a precision compass tool designed for cutting accurate circles and arcs. It has the ability to cut a range of diameters from very small radii to very large radii, simply and hassle free.The router attaches to the compass jig using its base plate guide rod holes. The cutting radius is set using the router base plate's guide rod locking pins which can then be finely tuned using a Vernier micro-adjuster.
How many different ways are there to cut a circle? Too many, and most of them are time-consuming, require quite a few steps, and the sacrifice of a substantial amount of material. Even the most obvious non-router technique (rough-cutting a circle with a jig saw and then using a jig with a belt or disk sander to true-up the edges) is surpassed by using circle template with a pattern-following or flush-trimming bit, so why not just cut the primary circle with the router and get that crisp, finished edge in one step without all the hassle? The answer before the advent of the N-Compass would have likely been "because by the time I waste the time and a piece of wood to make the trammel arm I could do it more efficiently another way," but not now. It's not uncommon to have the N-Compass installed on the router and set to length in well under a minute, and without dulling your bits and blades!
We also carry the excellent router guides by Jasper Tools:
- Jasper 400 Perfect Circle Guide for Plunge Routers
- Jasper 200 Perfect Circle Guide for Plunge Routers
