Show your circle cutting jig for router.

[Jack01]

I am planning to build a simple circle cutting jig for router. So far I have not found much of information in Google Search.

Please share your circle cutting jigs, ideas, thoughts.

Pictures will be helpful.

[Routerman]

Continuously adjustable from ~<1" to > 36".

[Phydeaux]

I asked a similar question some years ago. The answer was to buy Pat Warner's book. Now I need an answer for procrastination.

[Pirate]

I made this one a few years ago for my router.
It has a sliding pivot point for circle diameter.
I also routed the base to take router guides bushings.
The red knob is a stud threaded into a "t" nut on the underside of the base. The pivot bar is a "t" shape in a "t" slot. The red knob stud just jams the bar to lock in place.
I cover about 3" to 32" diameter circles, by turning the pivot bar around

[Cecil]

I bought Pat Warner's book and made a jig like the two posted so far, but mostly like the second one, since mine is made wood.



The above is not mine, but for a larger circle you can get steel dowel rods from the hardware store, drill corresponding holes into some hardwood and you have a circle jig.  I have done this, and I just tap the hardwood to accept a metal screw, directly above the rod.  I just tighten the screw as a clamp.

[Pirate]

fYI. I used a slot cutter to route the "t" slot in the base. It can be done, with strips glued on each side of the slot.
A "t" slot cutter is nice to have to cut slots for wood "t" track slots, for jigs, fences, etc.

[Alan S]

When you say "simple", how simple do you mean? I've simply drilled a hole in the router baseplate. A pin in the work allows you to cut a circle.

[Jack01]

Continuously adjustable from ~<1" to > 36".

Wow !!!  That is nice

[Woodshop]

I use Jasper jigs. rather spend my shop time making money.

[Phil Thien]

I use Jasper jigs. rather spend my shop time making money.

I'm going to get one of those, I like the repeatability and the indexing.