Discussions: 60,863 | Messages: 833,668 | Members: 39,660 | Online: 445 | Chatroom: 1
User Name:  Password:
Support Doctors Without Borders in Haiti

 
APUG search    RSS MOBILE  FORUMS   SELECT LANGUAGE  
Customize Sidebar
Recent Classifieds
Go Back   APUG > APUG English Forums > Darkroom > Silver Gelatin Based Emulsion Making & Coating > Film coating machine (homemade) on Flickr


Reply
 
Thread Tools Display Modes
Old 01-22-2008, 07:07 AM   #101 (permalink)
 
Join Date: Jun 2007
Posts: 26
Indeed. Call him "The Wizard of Oz" ;-)
snowblind is offline   Reply With Quote Ignore this user Ignore this thread Ignore this forum
Old 01-24-2008, 06:16 AM   #102 (permalink)
 
Join Date: Jun 2007
Posts: 26
Here's a question regarding that coating head: would it work to spray the emulsion rather than let it flow?
snowblind is offline   Reply With Quote Ignore this user Ignore this thread Ignore this forum
Old 01-24-2008, 08:11 AM   #103 (permalink)
 
Join Date: Apr 2005
Location: Rochester, NY
Posts: 14,172
No, it neither flows nor is sprayed. It is extruded.

PE
Photo Engineer is offline   Reply With Quote Ignore this user Ignore this thread Ignore this forum
Old 02-22-2008, 05:00 AM   #104 (permalink)
 
Join Date: Dec 2007
Posts: 20
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.
Dark Orange is offline   Reply With Quote Ignore this user Ignore this thread Ignore this forum
Old 02-23-2008, 04:51 AM   #105 (permalink)
 
Join Date: Dec 2007
Posts: 20


Dark Orange is offline   Reply With Quote Ignore this user Ignore this thread Ignore this forum
Sponsored Ad. (Subscribers to APUG have the option to remove this ad.)

Old 02-23-2008, 06:07 AM   #106 (permalink)
 
bdial's Avatar
 
Join Date: Jan 2005
Location: Live Free or Die
Posts: 2,510
Images: 8
Hmm, I never would have thought that cream cheese would be part of the formula
bdial is offline   Reply With Quote Ignore this user Ignore this thread Ignore this forum
Old 02-23-2008, 09:08 AM   #107 (permalink)
 
Join Date: Apr 2005
Location: Rochester, NY
Posts: 14,172
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
Photo Engineer is offline   Reply With Quote Ignore this user Ignore this thread Ignore this forum
Old 02-23-2008, 09:32 AM   #108 (permalink)
 
PhotoBob's Avatar
 
Join Date: Feb 2006
Location: Victoria, BC CANADA
Posts: 402
Blog Entries: 4
Images: 13
Wow, this is a very interesting development for film photography.
Sure would like to know whose machine that is and how to contact him.
__________________
Follow the Light John 8:12
~~~PhotoBob
PhotoBob is offline   Reply With Quote Ignore this user Ignore this thread Ignore this forum
Old 02-23-2008, 03:33 PM   #109 (permalink)
 
Join Date: Dec 2007
Posts: 20
Quote:
I never would have thought that CLS was a necessary part of a B&W formula.
So that would suggest what, in particular...
Dark Orange is offline   Reply With Quote Ignore this user Ignore this thread Ignore this forum
Old 02-23-2008, 03:35 PM   #110 (permalink)
 
Join Date: Apr 2005
Location: Rochester, NY
Posts: 14,172
Color!

PE
Photo Engineer is offline   Reply With Quote Ignore this user Ignore this thread Ignore this forum

APUG.ORG Block Ads. (APUG Subscribers have the option of closing this block)