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Go Back   APUG > APUG English Forums > Darkroom > Silver Gelatin Based Emulsion Making & Coating > Film coating machine (homemade) on Flickr

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Old 01-22-2008, 08:07 AM   #101 (permalink)
 
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Indeed. Call him "The Wizard of Oz" ;-)
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Old 01-24-2008, 07:16 AM   #102 (permalink)
 
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Here's a question regarding that coating head: would it work to spray the emulsion rather than let it flow?
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Old 01-24-2008, 09:11 AM   #103 (permalink)
 
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No, it neither flows nor is sprayed. It is extruded.

PE
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Old 02-22-2008, 06:00 AM   #104 (permalink)
 
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An update for those people still interested.

Recent efforts have been towards fine-tunining the filminator, in particular, the uneven coating caused by the bearing rumble in the coating roller.

I am pleased to report that over a beer, the builder has revealed that by simply upping the base speed from 2m per minute to 4m, not only has the banding been completely eliminated, but coating thicknesses of 50 micron wet (and apparently 3 when dry) have been consistently achieved.

I will see if I will have time this week to photograph some of the reaction chambers and emulsion preparation equipment he has built.
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Old 02-23-2008, 05:51 AM   #105 (permalink)
 
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Old 02-23-2008, 07:07 AM   #106 (permalink)
 
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Hmm, I never would have thought that cream cheese would be part of the formula
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Old 02-23-2008, 10:08 AM   #107 (permalink)
 
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I never would have thought that CLS was a necessary part of a B&W formula. Unless that is the AH layer, in which case it is sure gonna be hard to remove in a B&W process.

PE
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Old 02-23-2008, 10:32 AM   #108 (permalink)
 
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Wow, this is a very interesting development for film photography.
Sure would like to know whose machine that is and how to contact him.
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Old 02-23-2008, 04:33 PM   #109 (permalink)
 
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Quote:
I never would have thought that CLS was a necessary part of a B&W formula.
So that would suggest what, in particular...
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Old 02-23-2008, 04:35 PM   #110 (permalink)
 
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Color!

PE
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