Has anyone resealed or pulled apart a Mamiya RB 67 roll-film back?

What is the question ? I did a RB67 back a few years ago, a pain in the ............more or less.

I wanted to know if you replaced the old gummy seals with new ones from Mamiya, or made your own. It's difficult to cut new ones if the old ones are smashed and rolled into sticky pills.

I cut my own from the light seal foam kits available on ebay. The kits usually come with strips of several thicknesses and will do several cameras. If the dark slide seal is good, it's an easy job. I have not had to tackle a slide seal.

While I have not done a Mamiya RB back, for all the other seal and pad work I do I use either the adhesive backed foam sheets from Fargo or, for some places, yarn.

The foam sheets from Fargo come in a few thicknesses; they have two grades, with the better being Japanese. That is the stuff I use.

Wherever it works well, I prefer the yarn. It is easier to control and never wears out or degrades. It is what they used in the old days before the foam came along.

If you have to do the light trap for the dark slide, remember that whatever you put there has to resist being torn by the dark slide passing over it.

The one I did I had to remove the sticky goop that once was a light seal then made my own by dying grey open cell sponge rubber with black leather dye as I was unaware of many of the sources for light seal kits at the time. If I remember correctly there are seals under the top and bottom plates as well as the mount groves.

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<font size=-1>[ This Message was edited by: 45PSS on 2005-08-21 18:07 ]</font>