I used 1/4" bits on my 3/16" strips and it worked out just fine. The interlocking is not as locking so more clamps or staples might be needed.

> I would like to try some ultralight cedar strip construction but don't
> want to give up the obvious benefits of the bead and cove system . Does
> anyone know of the availibility of any bead and cove router bits for 1/8
> in or 3/16 in thick cedar strips