M4 Trivia.

[normclarke]

Contrary to the prevailing wisdom recementing a failed prism is quite straitforward providing that you do not damage the coating before re-glueing with a uv curing optical resin. The failed organic resin is easily cleaned with pure IPA and care with alignment will ensure success. Rectangular masks are easily modified with a few file strokes and a dab of black paint. Not for the faint hearted though!

Cheers,

normclarke.

 

[nickdando]

The failed organic resin is easily cleaned with pure IPA and care with alignment will ensure success.

Cheers,

normclarke.

I really like the image of using Indian Pale Ale to clean your Leica! 🙂

Can we recommend some other beers for cleaning purposes? After all, "Guinness is good for you".

Nick

 

[Nikon Bob]

Joe

I am glad you asked that question as my curiosity was also up on that point.

Glenn

Thank you for posting the photos of the two examples of finder masks.

I never noticed it before this thread but my black chrome Wetzler M4, ser. #1384XXX, has the barrel shaped mask and a perfect VF. If anybody is collecting a data base on this subject.

Bob