Been sitting on my hands here for a while, since I make and sell Reparrow footings...
Tecum-tha, you say you have been using this repair method for 10 years or so. Were you using tooling you made yourself?
Another issue that will come up with time is that a tapered drill wears unevenly so that the taper changes. The point end of the drill cuts the full depth of the hole with every use. The rest of the taper of the drill cuts proportionally less depth depending on its position on the taper, so that the large end of the taper cuts very little depth of the hole each time.
The result is that the small part of the taper wears faster and changes the angle.
This may never happen with the small number of times the Arrow-Fix owner will repair arrows. But if the tool is not used enough to worry about wear, will it pay for itself.
Van, as for using a conical drill without the fixture, you would find the shafts splitting even when the drill bit is new. When it begins to dull, think shattered shafts.
Also, Van, remember the first Reparrows with the square shoulders? That was the result of using a tapered drill to make a hole in the end of a piece of square hardwood. The drilled blank was then put between a matching tapered center and a normal but small wood lathe center in a metal lathe and the square was turned round for all but the last 1/8 inch or so.
I might have kept making the footings that way but for the fact that the drill wore unevenly, requiring frequent sharpening to restore the 5-degree taper. Of course I was making hundreds of them. Most Arrow-Fix users will not make anything like that many.
I note that the Arrow-Fix name was registered quite recently. "On Friday, May 21, 2010, a U.S. federal trademark registration was filed for ARROW-FIX. This trademark is owned by DiFis Engineering UG, Lange Furche 13, Fellbach 70736"
Jim