Can I run a cement splice through a 16mm Camera?

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silverhalide
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Can I run a cement splice through a 16mm Camera?

Post by silverhalide »

Howdy,

I've got a bunch of plus-x negative film which Martin Baumgarten took out of mags that he loaded for me. They are now on 100' daylight spools, with a cement splice at the midpoint. I'm contemplating using this film in an inexpensive camera, like a Kodak K100. Has anyone had any experience with this? Am I going to mess up my claw, aperture plate, pressure plate or general mojo?

Worried...

Thanks.
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Mmechanic
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Re: Can I run a cement splice through a 16mm Camera?

Post by Mmechanic »

The claw must be able to freely enter all perforation holes. If the corresponding hole edge is too high with a splice, the claw will slip on the film and not transport it or transport only partially. On its return it will either puncture the film in the case of a rigidly guided claw or again slip on the interperf web until it drops into the next hole in the case of a spring-loaded claw. With Paillard-Bolex H cameras of serial numbers higher than 100,400 the flung-on claw will continue to slip off until the lower loop is consumed. For that reason these cameras have a loop restorer.

Most claw mechanisms perform a stroke a little longer than the perforation pitch. That is about what I can say as a technician.
slashmaster
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Re: Can I run a cement splice through a 16mm Camera?

Post by slashmaster »

I'd be more worried about it pulling apart if you send it to a proper processing lab. Then it screws up half your film and everyone's behind yours.
silverhalide
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Re: Can I run a cement splice through a 16mm Camera?

Post by silverhalide »

slashmaster wrote:I'd be more worried about it pulling apart if you send it to a proper processing lab. Then it screws up half your film and everyone's behind yours.
That's a very good point. I hadn't thought of that. Not going to do it.
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Re: Can I run a cement splice through a 16mm Camera?

Post by slashmaster »

silverhalide wrote:
slashmaster wrote:I'd be more worried about it pulling apart if you send it to a proper processing lab. Then it screws up half your film and everyone's behind yours.
That's a very good point. I hadn't thought of that. Not going to do it.
So now what are you going to do? Very interesting that this guy Martin can work a cement splicer in the dark. Wonder if splicing before processing could ultimately lead to a cleaner splice since chemicals partially clean it. What would make you ask him to put the film in those cartridges then change your mind to put it back on 100 foot rolls? Don't you have enough good working cartridge cameras?
silverhalide
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Re: Can I run a cement splice through a 16mm Camera?

Post by silverhalide »

I bought a ton of magazines from Java Cycle. They had PXN in them. I had Martin load them with Fuji Eterna 250D for a bike trip (https://vimeo.com/154803406 - I try to work on editing now and then, but it's pretty rough at this point). I didn't want to just throw the film away, because it is usable (https://www.youtube.com/watch?v=vUyaFuwXZL0). So I had him wind it onto spools. I wound up giving a bunch of it away, but I still have maybe 10 x 100' rolls in the freezer. I was thinking of shooting some.
silverhalide
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Re: Can I run a cement splice through a 16mm Camera?

Post by silverhalide »

Here's the PXN developed as reversal (by Yale):

https://www.youtube.com/watch?v=paI6Vpk8uFc

That's a test of three different cameras, as you can see.
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