thanks stefan.

i have let the threebond cure for 2 days now. as it is a test, i tried to get a screw driver in to pry it out, amazingly the screw driver will change its formation, but the filler wont even get close to lifting up from the sides. it has bonded it self very well to the crank. smooth and shiny finish , yet a little flexible. i will use the three bond from now on. quite easy to source, and a tube will do many cranks.