How do you make your Speaker/Sub Rings?

[Chris02NeonSXT]

I've made a couple speaker/sub rings so far. However, I always have trouble making them nice and circular. What tools/jigs do you guys use? I've got a craftsman all in one cutting tool (Basically a rotozip) with a the supplied circle jig. Although I've yet to cut a good ring using this. If any of you are using one of these, do you have and tips? tricks? What do you folks use?

Thanks,
Chris

[ANeonRider]

Depending on the size, I use a router for larger ones (I usually just make my jig out of 3/4" MDF) and if I have small ones, I draw it out with a jig, then use a jigsaw.

[Acidburn]

i use a compass to draw a circle and then just use a jig saw to cut it out

a router with a circle cutting thing will give you the best circles

[XTRMEASURES]

i use both router and jigsaw

[jtomsic]

cut it out with a jigsaw then i use my beltsander and make them nice cause my jig cuts usually **** cause my jigsaw will stop working and u gotta tap the front with a hammer to get it going again.

[InhumanAcura]

cut it out with a jigsaw then i use my beltsander and make them nice cause my jig cuts usually **** cause my jigsaw will stop working and u gotta tap the front with a hammer to get it going again.

[jtomsic]

it gets the job done

[maylar]

Plunge router and one of the Jasper circle jigs... doesn't get any better.

[Shyne151]

jig-saw, because i'm cool like that and don't have a cutting bit for my router.