How do you roundover/chamfer the outside/inside of a ring

[omarmipi 10+ year member]

What is the process to make roundover edges on the outside of speaker rings?

Do I need to mount the router to a routing table?

Do I need router bearings or a custom jig?

Do I use a straight bit 1st and cut it again with the roundover bit?

I have the same questions for chamfering (45 degree) the inside of a ring. Pictures would be appreciated also. Thanks!

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[ramos 5,000+ posts]

I use a router table and a round over bit . But you can do it with out a table . Use a straight bit to cut your outside dimater circle first . Then Just round over the outside before you cut out the center . It will give you a more stable surface . Roundover bits have guide bearings on them allready

 

[ramos 5,000+ posts]

Chamfering is the same except you use a chamfering bit and have to do it after you cut out the center obviously //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[ramos 5,000+ posts]

That what your after with the round over ? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[ramos 5,000+ posts]

Here's a better pic that shows the roundover better //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[omarmipi 10+ year member]

That what your after with the round over ? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Yup, thanks.

 

[mlstrass 5,000+ posts]

If the rings are already cut out, drill a couple of small holes through it and screw it down to a wooden bench to hold it in place. Been there, done that....

 

[helotaxi 5,000+ posts]

If you're working without a router table (you can get a basic benchtop table for $40 and a cheap router motor for about the same) you'll need to space the ring above the worksurface or the screw on the guide bearing might drag on the work top.