# Rubber O ring roller design for Super 8/ Regular 8

**URL:** <https://forums.kinograph.cc/t/rubber-o-ring-roller-design-for-super-8-regular-8/2906>\
**Category:** Uncategorized\
**Created:** [March 20, 2025, 4:29pm UTC](https://forums.kinograph.cc/t/rubber-o-ring-roller-design-for-super-8-regular-8/2906 "2025-03-20T16:29:11Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![VideoMilk78](https://forums.kinograph.cc/letter_avatar_proxy/v4/letter/v/c68b51/32.png) [@VideoMilk78](https://forums.kinograph.cc/u/VideoMilk78)\
**Post date:** [March 20, 2025, 4:29pm UTC](https://forums.kinograph.cc/t/rubber-o-ring-roller-design-for-super-8-regular-8/2906/1 "2025-03-20T16:29:11Z")

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I was wondering if people could share their stl’s for rollers that use O rings to grip the film  
as well as the amazon link to the o rings intended for the design. I’ve tried to design rollers like this but all my designs never seem to work.

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**Author:** ![John\_Bower](https://forums.kinograph.cc/user_avatar/forums.kinograph.cc/john_bower/32/4328_2.png) [@John\_Bower](https://forums.kinograph.cc/u/John_Bower)\
**Post date:** [March 25, 2025, 6:12pm UTC](https://forums.kinograph.cc/t/rubber-o-ring-roller-design-for-super-8-regular-8/2906/2 "2025-03-25T18:12:50Z")

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It might help if a little more information was provided. What film format, what was failing on your designs? What O-rings have you used in the past?

Are these intended to be idlers or driving wheels? If so, what haft diameter are you using? any bearings or bushings. It will be very hard to customize any STL provided to you, so if any of the items don’t match your requirements, it may not do you any good.

One problem with O-rings is they only track on a small section of the film. If the film drifts off axis, you risk running off the edge of the film. If you axles are not perpendicular to the line of travel, or you don’t have guides to prevent it from drifting, the film will start walking off axis.

A roller design is going to be very much dependent on overall system design. That is why, for example, T-scann 8 has all the 3D print files, it works as a system. What method of modeling a 3D part do you have access to? If you are just hoping to print a file and have it work, that is not very likely to succeed.

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**Author:** ![VideoMilk78](https://forums.kinograph.cc/letter_avatar_proxy/v4/letter/v/c68b51/32.png) [@VideoMilk78](https://forums.kinograph.cc/u/VideoMilk78)\
**Post date:** [April 12, 2025, 7:59pm UTC](https://forums.kinograph.cc/t/rubber-o-ring-roller-design-for-super-8-regular-8/2906/3 "2025-04-12T19:59:56Z")

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I ended up designing my own that work great after a few days with no response to this thread 😅 thanks for the response though…

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**Author:** ![clongeri](https://forums.kinograph.cc/letter_avatar_proxy/v4/letter/c/d07c76/32.png) [@clongeri](https://forums.kinograph.cc/u/clongeri)\
**Post date:** [September 4, 2026, 2:51am UTC](https://forums.kinograph.cc/t/rubber-o-ring-roller-design-for-super-8-regular-8/2906/4 "2026-09-04T02:51:00Z")

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I’m just beginning to build my own scanner and I’m trying to design an O-ring capstan for 8mm film. Could you share your design if possible.

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**Author:** ![PM490](https://forums.kinograph.cc/user_avatar/forums.kinograph.cc/pm490/32/3176_2.png) [@PM490](https://forums.kinograph.cc/u/PM490)\
**Post date:** [September 4, 2026, 10:24am UTC](https://forums.kinograph.cc/t/rubber-o-ring-roller-design-for-super-8-regular-8/2906/5 "2026-09-04T10:24:50Z")

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@clongeri welcome to the forum.  
I use a 3D printed friction capstan (no pinch roller) for stop-motion 8mm and small reel 16mm (no o-ring).

One of the commercial scanners uses what looks like an o-ring capstan & pinch roller, around 3:30 in the [video](https://youtu.be/4RoRwtQ0PTY?t=219).

Let me know if what you are thinking is pinch or friction.