Reply by Dan Krager

Just for the record, you probably don’t have to heat treat the whole blade. I’ve heat treated just the 1 inch or so up from the cutting edge using a plumber’s torch. Mapp gas is hotter and faster, but you can get the heat you need eventually on an inch or so of small blade like this. Suggest not heating from the sharpened edge, but approach the edge from higher on the blade so you can control the heat in the thin part of the blade. You can “burn” the steel and it becomes worthless.
Shampeon, you were wise not to sharpen the blade before treating to prevent the burning. I was afraid you might have gotten it too sharp, but it seems to have turned out OK.
You will have fun shaping other profiles. The Dremel with diamond burrs becomes your good friend. I’ve found the interior corners of a profile to be the most difficult. Will be interested to see what you come up with.
DanK

-- Dan Krager, Olney IL http://www.kragerwoodworking.weebly.com