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Thank you, I have strap wrenches here I could try and chain link units I wouldn't use on a lens. I'll try one tonight.
I didn't think to use it to hold the lens extension body but need to be careful in this place because it's plastic bodied.
I've designed a better, safer tool to turn the rings (adjustable). If I get out to the lathe I'll turn the necessary round parts up. It's basically 12mm x 25 aluminium bar separated in two pieces with 2 6mm sliding guide pins and a central double ended reverse threaded adjuster in the middle allowing screw rotation adjustment. the design incorporates replaceable external guide rings (sections) to provide an external guide so the thing can't slip and slide and scratch a lens and two hardened, ground pins to fit in lens ring grooves.
I have a lot going on at the moment but I'll hopefully get to making the tool soon, it's a better design than anything I can purchase.
Sadly I do too many lenses. I have a thing about buying cheap lenses when I come across them which are already very mouldy with the thought if I pull them apart and clean the glass I get a cheap lens, if I damage them I lose little. I've so far resuscitated 3 good Nikon lenses I got very cheap and stripped right down to get working, including one unit which wasn't moulded but was locking up when zooming in and out.
I'm not cheap, I don't repair lenses for anyone but myself, I'm broke and my ability gives me access to better quality and range of lenses than I could normally afford.
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