Fortunately, I could run a 3/4" end mill through the big diameter. It's at least big enough if you don't have that capability that you can use a die grinder or Dremel to remove the excess.Comma but.What about that 1/4" diameter? Don't even think about using a drill. A 1/4" chucking reamer will follow a hole, remove the excess, not grab, etc
Wow, 1/4" hinge pins. I'll bet they are super strong. Leonard must have changed the dimensions just after I bought my plans. My H-51 plans show 3/16" hinge pins.
Very nice work. Your photos should be very helpful to future builders.