Re: My WORST film holders!
Quote:
Originally Posted by
AtlantaTerry
Quite a LONG time ago I bought four NIB 4x5" sheet film holders from an eBay seller in Los Angeles. When the package arrived, I looked at the film holders and noticed that they were rivited together - something I had not seen at any time before - I own over 100 sheet film holders. The boxes clearly said the holders were made in China.
Since I was not actively shooting any large format work at the time, I set the boxes aside.
A couple years went by and I started to work with large format cameras again. So I loaded up the aforementioned sheet film holders and went out to expose some film.
What TOTAL PIECES OF JUNK! :mad: The film was quite difficult to remove from the holders prior to developing and when dried, the images were CROOKED! :mad:
After some thinking and poking around I figured out what was wrong: those damn aluminum rivets! They were not holding the two halves tight together so in traveling around, the sheets of film shifted and drifted into the gaps between the halves then got trapped there which caused both broblems: difficulty of removal and tilted images.
Some wet afternoon when I don't have anything else to do, I am going to have to drill out the rivets and reattach the halves. I am thinking the best way to do it would be to drill out the rivets on one side then pry the halves apart just a tiny bit and gently inject some glue between the halves. Then I will clamp the halves together for a couple days until I am sure the glue has set. Rinse and repeat on the rivets on the other half. After all the glue has dried, fill in the rivet holes with something opaque like black silicone.
My only question is what glue should I use? Right now I am thinking about an epoxy such as JB Weld. Would a glue made for building plastic models work better?
The glue can not be too thick because that would cause the film to move out of the image plane.
Thanks,
Terry
PS
If you are ever thinking about buying some no name Chinese 4x5" sheet film holders that are riveted together, I suggest you don't. Stick with brands you know.
Hi Terry, see you were gone for awhile, but nice to see you back!!!
As for glues, what would penetrate best and hold well would be the watery superglue (non gel)... It would penetrate the seam (without separating), wipe off the excess, and clamp overnight... Apply with a hypodermic syringe, and if it clogs, dip/wipe tip with acetone... Apply as little as possible 'cuz a little goes a long way... Remove slides first, and avoid moving part areas... Also might swell softer woods slightly... This will flow into the seam well, and harden the surrounding wood or areas well... As it dries, it can leave a haze around the areas as it outgasses, but can usually be removed with a pencil eraser or very mild abrasives...
If you have to drill out the rivets, you can insert some fine wood rods (like non tapered toothpicks) into the holes, superglue them in flush, and get some #1 tiny woodscrews from the hobby shop and screw them instead... The superglue will harden the dowels well enough to screw into them... But start a small hole in them so the screw knows where to go...
Good Luck!!!
Steve K
Re: My WORST film holders!
Quote:
Originally Posted by
LabRat
Hi Terry, see you were gone for awhile, but nice to see you back!!!
As for glues, what would penetrate best and hold well would be the watery superglue (non gel)... It would penetrate the seam (without separating), wipe off the excess, and clamp overnight... Apply with a hypodermic syringe, and if it clogs, dip/wipe tip with acetone... Apply as little as possible 'cuz a little goes a long way... Remove slides first, and avoid moving part areas... Also might swell softer woods slightly... This will flow into the seam well, and harden the surrounding wood or areas well... As it dries, it can leave a haze around the areas as it outgasses, but can usually be removed with a pencil eraser or very mild abrasives...
If you have to drill out the rivets, you can insert some fine wood rods (like non tapered toothpicks) into the holes, superglue them in flush, and get some #1 tiny woodscrews from the hobby shop and screw them instead... The superglue will harden the dowels well enough to screw into them... But start a small hole in them so the screw knows where to go...
Good Luck!!!
Steve K
Steve,
Thank you for your tips and advice.
Terry