Thank you all for you help. You confuse me Bodfish.
I get that a lot. In fact, I often confuse myself! Here's why I made my comments:
Your blade design is good, your handle is the TITS! (that means good), I didn't beleive you did this with a itty bitty Dremel is what.........made me think you were pulling our chains

If you did, then you got some real good stick-to-it in your veins.
Ok, you have some talent, it's apparent. Don't waste it. You got some great advice here, IF you know how to use (and be safe) with the 4.5" grinder.
If not, I've got a deal for you! To finish this knife, and a few more, you don't need much.
Get some quality files. Yup, the ones without the motor. Get a big vise first. Clamp it in any way you can, and file your profile, your grind (flat, I'd think), and most of the finish. Sandpaper will do the rest. Do a google search for "cheap knifemaking".
Your lawnmower blade will be OK for your first knife. I know it's against the grain of most here, but it's what I started with, and I still use the knife I made with it. I hardened it in WATER, though..........Yours may crack....so what?
But, the BEST advice I can give you on your quest is to buy ONE BOOK. The $50 Knife Shop by Wayne Goddard. Amazon used is about $15 shipped.
I'll bet if you have this kind of persistance now, heaven help us all when you get a proper tool!!!
