Thanks, Warren.
I can't imagine how hard it must have been masking the 1/72 prop. I figured the laminations were a bit less than .5 mm wide in 1/32nd scale, i.e. a bit over .2 mm in 1/72!
The pencil technique is capable of some really spectacular results as Bertl and a number of others here have demonstrated: mine alludes to a wooden propeller, the proper hands can make theirs look like one.
Thanks again,
Chris