View Full Version : Film coating machine (homemade) on Flickr

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Photo Engineer
11-03-2009, 06:18 PM
PET is often "subbed" by electron bombardment followed by a layer of gelatin with hardener. Or, PET is coated directly with the bombardment in a sequence called ILEB (In Line Electron Bombardment).

Other supports are often subbed by an organic polymer, a solvent and which is mixed with acetic acid which is then coated and evaporated evaporated. Gelatin is placed on top of this.

Ammonia and most other alkalis dissolve gelatin by denaturing or hydrolysing the amino acid links.


11-03-2009, 07:14 PM
No. It will take a while for this to happen I guess.

Also, there is the matter of getting film support. We don't seem to be able to get any so getting the machine is a moot point if this turns out to be true.


By film support, you mean customers?

I wish I still had my machine shop; I would have been more than happy to contribute to the project.

11-03-2009, 08:05 PM

Film support is the same as film base, meaning the thin plastic sheet on which the film emulsion is coated. It is usually triacetate celluloid or PET. Problem is that it has to be subbed, meaning there is a layer that helps the emulsion to adhere properly and surviving the process without loosening.

Photo Engineer
11-03-2009, 09:06 PM
Hrst is right Pete. But, your post really gave me a good laugh. I'm sorry and apologize in advance, but this was a real HOOT to me! :D

Please forgive me.

I could use a good machinest!


11-04-2009, 12:02 AM
I knew what he meant, I guess I should have punctuated it with a :D but I wanted the joke to be more tongue-in-cheek than anything.

Glad a few people got a laugh out of it though :p With all the bad news to come down the pipe the last few weeks you have to laugh at the situation a little bit.

A small, efficent specialty coating machine could really be a profitable venture these days though. As demand shrinks for niche products, full scale manufacturing simply becomes impractical. While a small niche product may be a drop in the bucket to a company like (like Kodak) to consider worthwhile, investing in small scale manufacturing could make an individual a pretty good living.

photo researcher
11-04-2009, 08:10 PM
Please note that this work seems to have stopped. There is no further information on this anywhere.


No PE, The coating machine project is very much alive and kicking. Since the last post ,additional equipment has been installed ( multi emulsion delivery system, new drive and pumps etc), this together with much emulsion research to produce the emulsions and blends, interlayers etc for the color reversal film (Kodachrome type) that I am working on has, and still is occupying virtually all my time. With the emulsion blends for the three records nearly complete a four slot slide hopper will be installed so the film can be coated in just two passes, which will save time. The viscosity strata of the emulsions will then have to be adjusted...more work!
I know that there is a lot of interest in this project so please be patient and
more information will be forth coming.

Photo Engineer
11-04-2009, 08:16 PM
I am very very glad to hear that I was wrong. And I am very hopeful that your work pans out. I had some incorrect information.

My best wishes.


11-05-2009, 12:57 AM
photo researcher,

Welcome to Apug! It's great to hear from you at this place.

photo researcher
11-05-2009, 02:04 AM
photo researcher,

Welcome to Apug! It's great to hear from you at this place.

Thanks AgX, I have been in the background for too long.

Ray Rogers
11-05-2009, 03:49 AM
Thanks AgX, I have been in the background for too long.


I too would like express appreciation for your presence here!
Emotions sometimes reach intense levels, but there is also much passion involved. I truely hope you never regret your choice to "surface".

I never doubted that you were progressing and have long wanted to learn more about your progress, your ups and downs and so on.


11-05-2009, 06:51 AM
WOW, now we have Photo Researcher and Photo Engineer at APUG! Maybe I should change my nickname to Photo Developer! :D

Welcome!!! If you happen to have any spare time, post some examples of your work! We have seen pictures of the coating machine, but I bet there is much interest in emulsion making too.

11-05-2009, 06:53 PM
I can't wait to see more of this....and PE's DVD / book combo.

Christmas is coming.

Bob M.

11-06-2009, 05:47 PM
Dear Photo Researcher,

Welcome to APUG! We are all very impressed by your coating machine and results. I'm sure I speak for all of us when I say that we would like to learn as much as possible about your experiments.

Personally I'm very keen to learn about your emulsion making techniques. I'd love to hear your recommendations and would be VERY keen to see some photos of your emulsion making gear.

Keep up the excellent work. It is really inspiring what you have achieved with a non-commercial setup.

Thanks From,

09-14-2010, 10:50 PM
This is sweet.....very interesting. Definitely complicated, but neat nonetheless.

09-16-2010, 08:31 PM
Welcome photo researcher! I remember being a lot younger when I first saw those photos and thinking, "Death of film? Not for him, He's nuts!" It probably contributed quite a bit to my collecting and storing of analog equipment.

Photo Engineer
09-16-2010, 09:05 PM
Note the previous comments. This is about 3 years old and nothing new has been posted.

I wonder what is going on........


03-08-2011, 01:19 PM
On 10-15-10 photo researcher had this to say;

Yes indeed Chris,I am researching the making of a color reversal film of the Kodachrome process type. This has actually been a project since I built the coating machine some years ago and has occupied most all of my time since!
Although I have worked in photo technology for fifty years,actually putting together a full color multi layer material is daunting.
Results so far are quite exciting but when it comes to combining all the elements
I know it will be tough.
Because of my past employment I have acquired a large number of the chemicals needed so I am lucky in this respect.
Soon I will start to communicate some of my work but I hope those interested will be patient, as sitting in front of a computer is not one of my favorite pastimes.


Photo Researcher

I'll reach out to him again and see if there is any new progress. I've offered to act as his "communications liason", but never heard anything back. It seems that his last statement is not an understatement!

Ken Nadvornick
03-08-2011, 01:42 PM
Excerpt from the speech "Citizenship In A Republic", delivered at the Sorbonne, in Paris, France on April 23, 1910:

"It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat."

-- President Theodore Roosevelt


03-08-2011, 01:56 PM
Hear hear!

Ray Rogers
03-09-2011, 01:51 AM
Chris, I am very sorry to say that
I feel I must publicly admonish you for posting that communication.

He obviously wants privacy.

He wrote to you, most likely with the idea you would respect an implied understanding of "just between you and me".

I do not think you should have posted that and
I think it should be removed.

(Did he gave you permission to post that material? ...
If so, I apologize big time!)