I use a 1 1/2 "x 1/2 ", brown ,1/4" shanked grinding wheel to get the tight hollow grind for a good fit.I chuck it on my drill press and use a small parallel sided vise I got from Lee Valley to hold the bit to get true sides.
And I stand by my comment on screws,.If you used genuine Robertson screws and Cluthe screwdrivers,you just got to wonder about the rest!
And I stand by my comment on screws,.If you used genuine Robertson screws and Cluthe screwdrivers,you just got to wonder about the rest!
