Wrench for enlarger lens retaining ring

nsurit · Jun 14, 2017

Does anyone make a wrench, like the ones for shutters, to be used for tightening the retainer ring which holds the lens on the lens board. I know I can use a spanner wrench, just looking for an easier solution. If there is one available, who makes it, what is it called and where is the "getting place?" Bill Barber

John Koehrer · Jun 14, 2017

The spanner's made for it. Is there a clearance problem with the board/lens?

Sirius Glass · Jun 14, 2017

Check out http://www.skgrimes.com/products/spanner-wrench

nsurit · Jun 15, 2017

The little flat metal wrench made for shutters is so easy to use and takes up so little space, thought there might be one for enlarger retainer rings.

darkroommike · Jun 16, 2017

I think the retaining rings on 25mm and 32mm enlarging lenses are Copal 0 and Copal 1. A quick Google search did not turn one up for M39 but it would be a trivial thing to make one. You might also contact Thor Labs at https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=1430

Leigh B · Jun 16, 2017

McMaster-Carr Supply has a huge selection of spanner wrenches.

Go to http://www.mcmaster.com
and type spanner wrench in the search box at upper left.

- Leigh

paul ron · Jun 16, 2017

Enlarger lens retaining rings shouldn't be more than finger tightened.

If you had to use a wrench....

AgX · Jun 16, 2017

nsurit said:
The little flat metal wrench made for shutters is so easy to use and takes up so little space, thought there might be one for enlarger retainer rings.

One may make such oneself from a piece of sheet metal.

Wrench for enlarger lens retaining ring

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