Here's how I load 127 film. Obviously, all this is done in total darkness. I only load pre-cut 46mm film. I got some Portra 160 from Ebay a few years ago, as well as some Agfa XPS. I've also bought HP5 from Ilford during their ULF sale so I have a fairly good stock of color and b/w.
My contraption:
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Terry B, on ipernity
I built it around the cranking device on the right. It was part of a machine for easier loading of steel developing reels. I modified it by making special hubs (from polystyrene) to mate with the 127 spools. I had thought that the spring pressure (there's a spring on the crank shaft) would be enough to rotate the spool, but it wasn't: I had to insert a piece of tiny brass rod in one hub to catch the slot in the end of the spool and make it turn with the crank. I also used camera tape to hold the plastic hubs on the metal cranking device--it worked better than contact cement!
In addition to the contraption I need a small pair of scissors and a matte knife as well as a roll of 3M 'freezer tape' which has the right adhesion properties.
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Terry B, on ipernity
To begin, I align the backing paper with the spool at the 'stop' mark. I usually use a tiny piece of masking tape stuck along the edge of the paper so that I can feel this point in the dark. I remove the tape before I start inserting the film. I feed the end of the film into the spool where the backing paper is being taken up until I feel it 'catch'.
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Terry B, on ipernity
Then I start cranking, slowly and evenly winding the film and paper onto the spool, keeping steady tension on the paper as I do this. The guide slot I made on the base (those two black strips) helps with alignment of the paper and film.
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Terry B, on ipernity
I leave the old masking tape on the paper so I can find the 'start' point, where the film begins feeding into the exposure chamber of the camera, and where the tape holding the film to the paper will go. I let the film overlap the old tape (so it won't snag as it winds in the camera) then I cut the end with my scissors and tape it down.
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Terry B, on ipernity
I make sure the film and backing paper are aligned correctly in the guides on the base of the contraption and press the tape down very hard and uniformly, especially making sure that the ends are very tightly stuck down.
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Terry B, on ipernity
Then I trim the sides with my matte knife, being careful to follow the guides closely.
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Terry B, on ipernity
I roll up the rest of the backing paper, keeping tension on it.
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Terry B, on ipernity
Done! I finish with a bit of tape to keep the roll tightly closed. Part of the object too is to keep the paper undamaged so I can re-use it.