One possibility (just a guess but it is why I have thought about such
lengths), is to cut tennons with a Multi-router type setup. This is
essentially a horizontial mill and the length of the cutter decides
the total possible length of the tennon, so if you want more than 2"
tennons, you need a longer cutter. Again, just a guess. Also could be
trying to do template following on material deeper than 2".

I think I found 2 3/4 somehwere.

On Jun 16, 7:57*am, Morris Dovey wrote:
Victor wrote:
Have searched and cannot find a 1/2 in. up-cut spiral router bit
longer than 2 in. cutting depth. *Does any body know if any up-cut
spiral router bits are made with a cutting depth longer than 2 in?

'Scuse me for being nosey, but why is it necessary to remove that much
material in a single pass?

Even with a half-ton CNC router I haven't found it necessary to cut
deeper than one bit diameter at a time, and use multiple passes as needed....

...and a two-inch depth of cut will already be asking a lot of any
portable router.

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USAhttp://www.iedu.com/DeSoto/