CNT wrote:

I am having trouble understanding how to read the measurements from varies
brand router bits.

Below is for CMT

http://www.cmtusa.com/store/index1.ihtml?
x_page=store.ihtml&id=CID9581896837&step=2
&parentid=&menuinclude=leftnav_products.ihtml

Below is for Freud:

http://www.freudtools.com/woodworker...Bits/Rsd_Panel
/html/Rsd_Panel_1.html

And there's more, but for the sake to keep this short.

As much I understand raised panel routering, I look for the rail/stile
depth, that's it (for now). You know, it's either 3/8" or 7/16". But when I
look for that in their rail/stile set webpages, I can't locate those depth
measurements. I even sometime try arithmetic using other measurements
provided, IF ANY, then add or subtract, still doesn't give me the groove
depth. Example for CMT rail/stile (891.502.11), the "R" is 25/64", what is
that?

The "R" is radius...I assume w/ that size it would refer to the radius
of a quarter bead on the panel...

Dimensions for the cutters regarding the material are simply the cutting
height--that tells you what thickness of door rail/stile material
they're suitable for. Typical cabinet doors are 3/4" w/ a 1/4" groove
for the panel. This is determined by the grooving cutter.

There's "overall diameter", "overall length", "large/small radius", and few
other terminology. Is there a link **with drawings** that can explain what
terminology means and how the measurements go about? Forgive me for not
google it before expressing in here...

I've not looked at many sites that don't have profile drawings w/
pertinent dimensions...