8mm Forum: sound striper solution

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Topic: sound striper solution

Jason Dellinger
Junior
Posts: 1
From: Cincinnati
Registered: Jun 2005

posted June 28, 2005 05:05 PM

i am experimenting with 8mm equipment and materials, with some success. now i would like to get into sound. i don't have a sound projector yet (just a cumbersome bolex "sonorizer" attachment which seems sticky and is really intended for use with the "M8" projector, which i don't have), but i do have a hard to find "sound striper" apparatus. it is a pretty simple machine and even came with two small reels of audio tape for 8mm. it is not as sophisticated as the sound stripers i've seen pictures of on the internet, which have multiple heavy wheels.

here is the web address of the auction i won:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7520605097&rd=1&sspagename=STRK%3AMEWN%3AIT&rd=1

what i am wondering mostly is, where can i get the proper adhesive solution and how do i use it? i assume that the small cylander on the front of the machine is an adhesive applicator of some sort. it has a square opening where the tape crosses it. the cylander leads to a larger cylandrical compartment on the back of the machine, which is upright, not horizontal. at the bottom of the upright compartment there is a small "wick" which leads into the "applicator" on the front. if this is the glue compartment, it must be a very special type of glue if it can be consisently transfered via a (cotton?) wick. so...what is it?

also, while i am asking questions, where can i get an 8mm film splitter? i started to make my own, but i am not skilled enouph to acheive the neccessary precision. maybe there is some service or common precision machine at photolabs i can request? i have been developing the film on my own with some success, but not splitting.

thank you for your time.

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i am cheap and stingy

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John Whittle
Jedi Master Film Handler

Posts: 791
From: Northridge, CA USA
Registered: Jun 2003

posted June 28, 2005 09:43 PM

You may be a few years too late to get the "proper" solution, but remember that this system only works for acetate film and the solution is really film cement. You might have to experiment with diluting it with acetone and and the "speed" of winding the film thru the device will have a bearing on the success of your stripe. Also the strip can only be applied to the base of the film (hence camera original, not reversal print although most comercial positive prints are in "camera position").

As for a slitter, watch eBay for the Baia slitter. They are a simple device with two roller cutters and a guide that is "just" 16mm wide to feed the film through. Commercial slitters (costing thousands) were much larger and better made. There was a cheap little slitter from Superior Bulk Film that was just a wood block with a single edge razor blade. You could easily make one of those and your success would depend on your skill in creating the wood and the positioning of the blade.

The Bolex Sonorizer wasn't around very long and one of it's big drawbacks is the sound is recorded in the wrong position. In Regular 8mm the sound should proceed the picture by 56 frames. The Bolex has the sound retarded by a couple of feet. But at the time it was made, there weren't many choices. Sears sold a similar device and I don't know who made theirs but it was along the same lines with a penthouse device which allowed the feed sprocket of the projector to provide the power to the sound head by pulling the film through it.

John

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Tim Christian
Expert Film Handler

Posts: 219
From: Norfolk, UK
Registered: Jun 2003

posted June 29, 2005 02:15 AM

That is a Weberling system striper. The cement is a mixture of acetone and 1-4 dioxane. It is readily available in Europe (Wittner) but most PTTs won't allow it to be posted.

The thicker stripe cements were used on Rexette/Supersound machines where cement was applied to the film via a transfer wheel, see sound striping articles

The film is pulled through with a projector at normal projecting speed.

With sound striping available commercially (EvT Magnetics, for example) it is hardly worth setting up to do your own. It is a bit like doing your own colour processing: interesting but hardly economical. I know - I do my own striping!

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Tim

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