Fix Old Cameras: Mamiya RB67 Light Seals

Degraded light seals in a Mamiya RB67. This tutorial video shows how to remove and replace the entire set of light seals in a Mamiya RB 67 medium format film camera.
classic camera repair - www.phototronic.biz
A few tools and books - www.amazon.com/shop/fixoldcam...

[@nickraypost]

Thank you for putting this great work together! Got me going and learned boatloads of installation tricks, and good quality of work. Appreciate ya from Florida!

[@tomsmith8465]

best vid on replacing light seals on Mamiya rb67, great work!

[@ulrikchristiansen]

Okay, just installed new light seals following the guidelines in this video. Thank very much indeed for the explanation! Now for finding out if it worked...

[@michaeldimmitt2188]

Awesome video! Thanks for helping us beginners!

[@dankraft7427]

Thank You for guiding me through replacing the light seals on my 4-backs and the rotating back on my RB67 Pro S. The cost to have the back's repaired at a repair shop is $150. This repair is time-consuming so you need to be patient. I found out using a Q-tip to deactivate adhesive strips works much easier for me. I over saturated using this repair technique to deactivate adhesive strips and was working with a spaghetti noodle. You can get this light seal foam on Amazon.

[@FixOldCameras]

Good to hear that your persistence paid off. That is a funny, but perfect description of an overly saturated light seal. Thank you for the comments.

[@rogerb5615]

Seal material is also available from eBay seller "millyscameras" in UK. I recommend you avoid pre-cut seal kits sold for specific camera models: Much cheaper and practical to cut your own from bulk material as shown in this video. Plus, when you mess one up, you'll have plenty of material to try again.

[@OperationBlueprint]

I've just replaced my seals. Thank you for the great guide!

[@FixOldCameras]

Good to hear of your success.

[@TheWriterforhire]

You rock! Thank you for doing these videos and doing them so well.

[@FixOldCameras]

And thank you for your interest in FOC.

[@emmahartman4099]

thank you so much. just helped me replace my seals. this was super helpful

[@FixOldCameras]

Good to hear of your successful repair

[@matthewfletcher]

Thanks so much for all the help and measurements, extremely helpful for my current reseal of my new RB! Any tips for the rounded corners of the square seals around the film view areas?

[@_zzpza]

Awesome video as always. Thank you.

[@FixOldCameras]

Your interest in Fix Old Cameras is appreciated.

[@MrVietnamcycling]

thank you so much! I'd fix my RB67 Light seal as demo! useful guide tech!

[@FixOldCameras]

You are welcome and thank you for your interest in FOC.

[@dcdc2407]

Hi Fix old Cameras! :) Firstly, thanks for all the great tutorials! I have an Olympus Om2n - the shutter is inconsistent once every 4-6 shots. Even at 1000th of a second it sometimes stays open for a second. Any idea of how I can fix this? Thought it might be a faulty capacitor, but then surely it would just not work at all? Any advice would be so appreciated! Thanks a mill!! :)

[@Narsuitus]

Thanks for the useful video.

[@FixOldCameras]

Your are welcome.

[@SammySantiagoIrizarry]

Superb Video!!!! Thanks!!!!!

[@FixOldCameras]

Thank you for your interest in Fix Old Cameras.

[@proshotsfiji]

Great Video!, can you tell me how to safely change the dark slide felt seal, mine has gone very hard and shiny, tried brushing it but too far gone, the metal spring bit looks in good shape, thanks,

[@mudcud]

So helpful

[@conandgrey7103]

Thanks you sir

[@justinartcore]

Thankful to have found this video! I just received my rb67 and saw that the most difficult part (at least for me) is replacing the light seals on the shutter mirror. The foam is deteriorating, any tips on how to cleanly and carrfully remove it? Also, what are some tips to clean the shutter mirror. Thank you again!

[@FixOldCameras]

Just be patient as you work it out with a scraper, you want to avoid scratching the paint. Have a sturdy paper towel handy to keep the tip of you scraper clean of the foam as you remove it.

[@karkunow]

Wow! Thank you!!

[@FixOldCameras]

You are welcome.

[@Zarveyyy]

Hey ! Firstly thx for the great content ! :D I've found 1.5 and 2mm light seal foam but can't find medium/light density light seal, is it really important that they have the specific density ? (I'm not planning on changing the foam near the mirror because i'm scared ^^ and the light leaks on the pics suggests that its not coming from there anyway !)

[@bassman7772]

I got one of these, RB67 Professional, and it seemed to have nearly all of the foam seals completely cleaned out but not replaced. Any idea why someone would do that and if it’s possible to shoot film like that?

[@fatalswitzerland]

What foam do you use for the light seal for the dark slide? I used the same foam and it got me into a disaster....

[@arvydasgasparaviciusphotog7250]

Hi! Thanks for such informative video! I was recently struggling with my Mamiya RB67 light leaking bellows. (see one of my latest videos). Would like to see how you do it properly! Best wishes from Denmark, Arvydas

[@FixOldCameras]

That would be a good subject for an FOC video. Thank for your interest in Fix Old Cameras. Also, here is a link showing one way to patch a bellows of a Mamiya 6 kzbin.info/www/bejne/oHzQoWBtg6uqZrs

[@twowaytrauma2617]

Great videos. Any chance you will be doing a video to show how to replace the bellows on the RB 67?

[@FixOldCameras]

A great suggestion. Hard to say when such a FOC video might be produced.

[@twowaytrauma2617]

@@FixOldCameras no worries. I used to make videos, and I know it's a lot of work. There is also the requirement to have the required equipment and parts, which I know is expensive. Thanks for getting back to me, and great work with the videos!

[@FixOldCameras]

Your gracious understanding is appreciated.

Does it really mind if I only use 2mm thick foam instead of 1.5 and 2? The thing is I already have a sheet of 2mm foam and I don't want to spend much money 😅

[@matejkyjovsky4991]

I wanted to ask if it is okay to use both thicknesses in high-density seals. I have ordered both 2mm and 1,5mm however they seem to be both rather high in density. I have noticed upon arrival and now installing them. Film back seems to be okay with it however I am not sure about the mirror. Do you think it would somehow affect the operation if the foam won't be able to squeeze as much as a medium dense one would? Thank you! Great vid!

[@FixOldCameras]

If the shutter release and frames as it should than you are OK with the installation.

[@bowobookinternet9066]

Great! My mamiya RB67 also original professional, not pro s or pro sd.

[@gabrysgabriukas]

Thank you! where to buy the felt light trap strip material? its diffrent from foam seals I suppose.

[@FixOldCameras]

Local craft stores... look for 1mm or 1.5mm. Or www.amazon.com/shop/fixoldcameras Affiliate disclosure: Please make note that the links provided are affiliate links and a small commission is received by the creator of this channel if you make a purchase using these links. This adds no extra expense to your purchase. Your support of this channel is appreciated. Thank you making any purchases through the links on this channel.

[@MrNiepoklikam]

Where did you buy that foam from? Thanks for the video!

[@FixOldCameras]

Among other sources www.amazon.com/shop/influencer-c06c729d?ref=ac_inf_hm_vp

[@FletcherRC]

@@FixOldCameras Hello, I ordered using the link above. The thicknesses in the video are stated as 2mm and 1.5mm foam. The store items are 2.5mm and 1mm. Might want to swap those out. Cheers!

[@FixOldCameras]

@@FletcherRC Thank you for pointing out the oversight. The items have been added to the store.

[@gaterkj]

hey! i don't have wood cotton swabs or bamboo, would wood toothpicks work in place of those? thank you for the video!

[@michaeldimmitt2188]

Yup! Bamboo take-away chopsticks or shish kebab sticks too. I save all of them, even the long tooth picks that come in my hamburgers!

[@phillipcedoz5527]

Where do you buy the dark slide felt?

[@FixOldCameras]

Various sources... there are a few listed here www.amazon.com/shop/fixoldcameras

[@DalyVideo]

Is there a kit available for the RZ67 Pro II?

[@FixOldCameras]

Probably. If you find a good source and you can confirm the quality of the foam... pre-cut pieces would surely be nice to work with.

[@kiraantoku571]

where do you buy the light seal foam?

[@FixOldCameras]

Here are few options. www.amazon.com/shop/fixoldcameras Please be advised that some of the links provided are affiliate links and a small commission is received by the creator of this channel if you make a purchase using these links. This adds no extra expense to your purchase. Your support of this channel is appreciated . Thank you for making any purchases through the links on this channel.

[@johnjewell219]

👏👍😎

[@HKG36E]

You use the alcohol to deactivate the glue on the light seal foam, right? Now, I've read somewhere that one of the ways to deactivate the glue is to use your own saliva (lick the adhesive part) or water. I believe that that is better than to use alcohol to deactivate the adhesive, because the alcohol is used to dissolve the the old glue residue and could possibly ruin your foam seals even in small/little quantity. What are your thoughts or anyone else's to use real linnen or wool thread to replace the light seal foam in the doors? For example my old Agfa Synchro Box has its original light seals which are probably linnen thread. would the linnen thread seal just as enough as the foam cut outs?

[@FixOldCameras]

If the light seal foam is of a good quality it will not be damaged by the alcohol. It evaporates completely and fairly quickly leaving the adhesive completely intact. Spit probably does not deactivate the adhesive, but coats it and by nature evaporate slower. Neither property should cause any harm to the seal if that is the technique you are comfortable with. Properly sized and textured yarn or thread should be a good substitute and in some cases maybe a superior choice.

[@rokg12]

Is there any chance that I send you the 6x4,5 film back that was never used before but in my opinion needs new light sealing? Can you sem me some email contact. I am from Slovenia EU. Thank you

[@FixOldCameras]

If you are interested in sending your film back in for repair... www.phototronic.biz/services.html

[@joeygmc07]

Where can i get this foam at?

[@FixOldCameras]

www.amazon.com/shop/fixoldcameras Please be advised that the link provided is an affiliate link and a small commission is received by the creator of this channel if you choose to make a purchase using this link. This adds no extra expense to your purchase. Your support of this channel is greatly appreciated. Thank you for making any purchases through the link on this channel.

[@joeygmc07]

THANKYOU!

[@nathanjohansen7169]

The alcohol thing trips me out. I would have figured that would ruin the foam!

[@FixOldCameras]

Safe and effective in this application. Thanks for the comment.