When fitting wheels, bushes, gears and flywheels, it is necessary to keep the bore below the dia of the axle in order to obtain a firm fit. In order to obtain the "pressure fit" it is essential that a precision table drilling machine or a lathe be used in conjunction with the following drills and reamers.
for 1,5 mm axes: reamer d = 1,49 mm Ø (drill 1.4 mm Ø)
