theoretically this is feasable though not everyone has a milling pal.
Also, there's quite a variety of profiles for the groove, adding to
that a variety of profiles
for the tip (angle and how far back the grinding goes). this applies
to the 1/2 bar
and then again to 5/16, 3/4 and so on.
go ahead and make a few 3 foot bars. After milling and tempering, cut
them in half. I'll buy
half of each. tempting isnt it?

On 18 , 16:24, Kevin wrote:
Apart from getting the mill work done to your own specs,
I don't really see a downside to this.
I looked around on the Enco site and found a piece of .5 O1 drill rod
3' 'for a bit less than $8.00. After milling the groove about all
that would be left to do is harden and temper the piece. At such a
low price, you could buy several and experiment a bit.