Anyone know what these are for?

[Scott W]

I got them in a tool lot a while back.  They don't seem to be guide bushings.  They just sit flush or maybe a tad inside the router base.

I feel sure I am in the minority in not knowing.

[Roly]

I got them in a tool lot a while back.  They don't seem to be guide bushings.  They just sit flush or maybe a tad inside the router base.

I feel sure I am in the minority in not knowing.

Turn them over and put nut on the threaded part.  The sleeve part has the router bit inside and the outer part goes against the wood or pattern.  Roly

[Lumber Yard®]

Turn them over and put nut on the threaded part.  The sleeve part has the router bit inside and the outer part goes against the wood or pattern.  Roly

 


 Maybe you should look at the picture again? 

[Scott W]

Turn them over and put nut on the threaded part.  The sleeve part has the router bit inside and the outer part goes against the wood or pattern.  Roly

So here are the two nuts that came with it. I really don't get what I'm looking looking at.

[jteneyck]

Just a wild guess but might they be for centering the router base plate on the router bit for collet work?  No clue why there are some many parts though.  Seems like one for a 1/4" bit and one for 1/2" would be sufficient.  Anyway, if that ain't it I got nothing.

John

[lkomroff]

The Rousseau Company calls them reducer rings. Still not sure why you would need them. Linky


Larry

[taxman]

The Rousseau Company calls them reducer rings. Still not sure why you would need them. Linky


Larry

Rousseau reducer rings to reduce bit opening for safe & accurate cuts

[iclark]

I would expect them to fit at least one brand of router plate for mounting the router under a router table. The different size holes are to provide minimum clearance around the router cutter - sort of like a zero-clearance insert for a tablesaw.

[Scott W]

Thanks a lot for the responses.  I just assumed they'd be used with a hand held router.