I make them as I need them. It took 2 minutes to make the one above - I was slowed down by taking photographs.
I prefer to make them on my lathe with the drill bits in collets but wanted to show it can be done without. With the drill press I clamp the machine vice so that it can't move, then as long as the jig under construction doesn't move the second bit should be in line. The best results using the above method is to use a mini drill for the hole right through the jig, but use a hand drill for the larger bit, you can then feel the bit following the pilot hole.
I used a variation on this when making wheels for the cannon on my Unicorn. The kit only supplied twelve wheels for 32 guns. At the time I did not have a lathe only a mini drill and press (Black and Decker). So I sawed off the wheel blanks from dowel. Next I clamped the machine vice on the press, put an off cut of wood in the vice and drilled a hole in the wood to match the outside diameter of the wheel blanks and just deep enough to accommodate a blank. Then without disturbing this wood or the vice, I put an axle size bit in the drill. The process then was to drop a blank in to the hole and drill the centre - I held the blanks down with a chicken stick to stop them rocking. Within 10 to 15 minutes I had 116 concentrically drilled wheels.
Edited by ianmajor, 15 April 2013 - 04:01 PM.