Fixing and M Adapter ... possible?

[raid]

"Fixing an M Adapter"

Hi,
I damaged an M adapter when trying to screw on an old Elmar lens too tightly. I would not have done this with anybody else's lens. The notch on the adapter has been slightly chipped off. Can this adapter be saved? If so, how?

Raid

 

[jern]

If you have the part that chipped off you might try gluing it back on with a two-part epoxy.

If you lost the chipped part then you might try filing a small recess in the adaptor and fitting a small piece of brass into it. Again, glue with a two-part epoxy. It the fit isn't perfect you can use either a file or sandpaper to shape the brass.

If you try this get surgical gloves - you don't want epoxy sticking to your skin. Epoxys are generally rated between 1500 to 2000 lbs. They also vary in setting time from 5 minutes to several hours.

 

[clarence]

If you try this get surgical gloves - you don't want epoxy sticking to your skin. Epoxys are generally rated between 1500 to 2000 lbs. They also vary in setting time from 5 minutes to several hours.

I used to work with all sorts of epoxies and cements when I was an art student. Never used any gloves, even though I should've. I've glued my fingers together before, but after about a day, you can take them apart. No scars or adverse skin reactions either. I'd say the climate does more damage to my face than industrial adhesives have done to my hands.

Still, I'd recommend using gloves.

Clarence

 

[raid]

I am still tying to figure out what I have caused.

 

[jern]

I'd say the climate does more damage to my face than industrial adhesives have done to my hands.

Still, I'd recommend using gloves.

Clarence

I didn't mean to make epoxies sound threatening. I love them and use them all the time.

Probably the worst that would happen if you got epoxy on your skin is an allergic reaction. If you get it before it sets you can clean it off your hands with rubbing alcohol.

Manufacturers also recommend eye protection and good ventilation. The vapors from curing epoxy can cause allergic reactions, asthma, or shortness of breath.

 

[raid]

Basically, I tightened the lens too much. Which part(s) of the adapter would be damaged? Now,the adapter mounts well on the T, but the lens can be removed easily. There is no "click" for securing the lens on the body of the T.

Raid

 

[jern]

It would help if we could see the adaptor. If you have a macro lens post a few pictures of the adaptor and point out what you think is broken.

 

[raid]

OK; here are a few close-ups:

 

[raid]

Here are three more pics.
I am still searching for the part that is bent or damaged.
I have just found another identical adapter but made by Leitz.
Both are for the M3 28mm-50mm and forM2 it is 50mm.
What gets damaged when the adapter does not stay locked onto the body?

Raid

 

[jern]

The indent on the adaptor that fits over the lens release button catch doesn't look chipped. You may have damaged the lens release button on the camera. Do your other lenses mount and lock normally?

 

[raid]

Jern,

I also first thought of this possibility, but M mount lerses fit as usual on the Bessa T with that "click". The strange thing is that this same adapter fits great on a CL body. Maybe both the adapter and the body got some damage and their use together amplifies the situation?


Raid

 

[Ronald M]

This is indeed serious. Try a few pics and see if there are light leaks. I looks as if there is still a seal around the lens flange. If not smooth the chip over and keep going.

Too bad silver solder requires so much heat.

Cheaper to replace tan repair I am afraid.

 

[jern]

Jern,

I also first thought of this possibility, but M mount lenses fit as usual on the Bessa T with that "click". The strange thing is that this same adapter fits great on a CL body. Maybe both the adapter and the body got some damage and their use together amplifies the situation?


Raid

You may be correct.

Check to see if one of the t's mount flanges is bent or chipped.

Did the adaptor work normally on the T before you tried to "screw on an old Elmar lens too tightly"?

 

[raid]

Jern,

Yes, it worked fine. I should add that using another adapter on the T works well too. I will next inspect the T's mount flanges.

Raid

 

[jern]

Cheaper to replace tan repair I am afraid.

If you can't find any obvious damage (i.e. something you can fix) then Ronald is probably right. Buy a new adaptor (but get a return option in case it doesn't fit).

 

[raid]

Thanks for the input. This is a small problem after all.

Raid