I could do it manually fairly easily, but I'm having a tough time coming up with step-by-step instructions. I thought there was a filter that does this automatically. Isn't there one?

Try these...

Photoshop Tips: Creating Carved and Sandblasted Text Effects in Photoshop
http://www.graphics.com/modules.php?name=Sections&op=viewarticle&artid=392

Chiseled Inner Bevel Type - Page 8
http://www.wdvl.com/Graphics/Tools/Photoshop/Metal/dirty2-3.html

Gothic Chiseled Type Effect
http://www.peachpit.com/articles/article.aspx?p=420907&seqNum=4&rl=1

a really down-and-dirty-quick-freehand example:

That's more like what I'm looking for Darrel. Thanks to the other guys, but I usually don't mix my logos with Photoshop (it's a purist thing).

>>
Thanks to the other guys, but I usually don’t mix my logos with Photoshop (it’s a purist thing).
<<

What are you using to do your logo?
CorelDraw has a feature to automatically add a chiseled look (Effects>Bevel as shown at top of image), or if you want to draw the facets manually, you can convert your logo to a bitmap temporarily and use Corel's Centerline Trace feature to get the skeleton stroke as shown in bottom of image. [note the roughness of curves is only because I did this quickly, you could be as accurate as you'd like.

What are you using to do your logo?

I use Adobe Illustrator to make all my logos. They're all vector images.

Letterhead Fonts has a great tutorial on creating prismatic effects in vector.

That's very handy, thanks Tiffany.

Well, I think I have something I'm happy with. Anyone see anything that doesn't look right?

the bottom A-S join seems to be missing a highlighted size (left side of the serif on the S like the top one).

Also, if your light source is upper-left, you'd want to reverse the shadow/dark side on the mid-part of the S.

But those are both 'technical' answer and, aesthetically, it seems to work just fine as-is.

Yeah, originally the S was actually really easy. I thought it was almost too easy, so I started playing around with the middle curve and where there might be shadows and such... that became more of a headache than I cared to deal with.

I'm sure that there is a better solution, but for this being my first attempt, I'm very satisfied.

Thanks for all the help folks.