router bit choice

[A Reef Scene]

What is the name of the router bit used to make speakers flush mount?

[dyazdani]

You'll need a 1/4" solid carbide upcut bit and a straight bit (I use a 3/4"). The straight (flat bottom) bit is called different things at different retailers I think.

I bought mine at MLCS Woodworking - here's a link to the flat bit (they call it a plunge cutting straight bit).

I use the upcut bit to make the first (outer edge) cut - my Jasper jig is calibrated to a 1/4" bit so that is easy. I then rout a "trench" for the driver flange with the straight bit. Finally, cut through the inner circle with the upcut bit again. Obviously, you need to do the first two steps at the desired depth.

[noah katz]

You can do it in one shot with a rabbeting bit it matches the amount of rebate you want

[ThomasW]

The problem with using a rabbeting bits is that frequently they aren't sized properly for the drivers. So that means buying an assortment....

A larger diameter flat bit 1/2-3/4" combined with the Jasper jig provides the greatest flexibility. If you're only doing a few speakers a double cut bit with carbide inserts will work fine.

[opt-e]

What is the benefit of using the upcut bit to make the outer edge cut as opposed to just using the straight bit?

[ThomasW]

The benefit of using an upcut anywhere is that it pulls the cut wood out of the slot. And the Jasper jig is indexed to it, that makes it quick and easy to get an accurate outside diameter cut.

[opt-e]

Thanks Thomas!

[A Reef Scene]

Thanks for all the help