3 step arbor

[Frank S]

Today while getting ready to machine some parts I decided I needed an arbor just a bit more concentric than the treaded rod one.
Also since I know of some parts that will require a larger bore I made this arbor to have 3 landings 1" 1.125" & 1.25o" this will save me having t5o make 2 more arbors I will just use a centering cone with a 1" bore to tighten the 2 larger bore work pieces when it is time to make them