Posted: Sat Apr 04, 2009 3:30 pm Post subject: MC ROKKOR-PF 58mm 1:14 Help please !! |
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Rusty wrote:
Got one this morning, optics and iris spotless and cosmetically very good
the focusing helicoil was stuck solid so i dismantle'd the lens till i had the inner and outer helicoil seperated from the rest
the two parts , a brass outer and aluminium inner was frozen solid due to galvanic corrosion between the different type metals
soaked in boiling water for 20 min to dissolve the aluminium salt,then made a groove in the outer , clamped in vice and gently tapped the two parts apart by rotating the outer part with a hammer and piece of flat metal
all cleaned up and lubed ready to put back, and now BIG PROBLEM
I have been trying for close to 2 hours but i just cant get the 2 sets of thread in the helical to enter and mate
and i am very close to throwing the piece of metal over the fence
Am i just stupid and unhandy , or is there a special way
Please help ! _________________ Daniel |