Is a "D Bit" simply a shape ground or cut to the desired configuration and
then half of it ground off ?
Any Internet links showing the process of making a "D Bit" ?
If so - could I make such a thing on a Drill Press by grinding a shape into
a tool steel rod tip, then putting it into the drill press chuck to finish off the
shape with a file and or a diamond sharpening plate while it is rotating ?
Afterward, grind away half of it lengthwise and then harden it with a torch ?
I hate this being ignorant and without tools !
Its just that tools cost an arm and a leg and I'm too old to start trying to
be a machinist....
BTW yous guys - Why make the mould block and handles and sprue cutter
when you can buy a LEE Aluminum Blank Mold for $26 ($5 shipping) and then
ream the cavity yourself ?