Super easy way to make a small drive belt (or O-ring) - Router Forums
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post #1 of 9 (permalink) Old 11-01-2016, 03:11 PM Thread Starter
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Default Super easy way to make a small drive belt (or O-ring)

In a recent post about making pulleys I mentioned that I was going to make a drive belt for them and said I would show you how I do that. This technique could also be used to make an emergency O-ring of any size.

For my drive belt I used 2mm O-ring cord that I stretched between my pulleys and marked the spot to cut. Cutting was done with an exacto knife but a razor blade or utility knife would work as well.

Now, here’s the easy but surprising part: a tiny drop of superglue is applied to one end of the cord and then the other end is pressed against it for about a minute. When the glue has set you have a drive belt and/or O-ring.

I made a small test ring first and when it worked I moved on to my longer belt. The small belt is about 1 3/4” when measured between the two legs of a caliper. I was able to stretch it to over 2 3/8” without the join giving way.

[Sorry the close-up photo is the join is so blurry, I couldn’t get my phone to focus on it.]

There is enough stretch in the belt to give me the tension I need to drive the pulleys and it’s easy to make another if needed. Maybe you’ll find this technique helpful someday. The O-ring cord came from … (where else?) … Amazon.
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post #2 of 9 (permalink) Old 11-01-2016, 03:27 PM
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I've used that method for making 'static' O-Rings, but never trusted them in moving applications. It's good to know that they're tougher than they look!

Can't wait to see the final project
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post #3 of 9 (permalink) Old 11-01-2016, 03:41 PM
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If you're planning on making a lot of them, a jig like this comes in handy and gives good results - they have fancier - i.e. more expensive - ones but this will give satisfactory results.

https://www.zoro.com/value-brand-spl...Q&gclsrc=aw.ds
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post #4 of 9 (permalink) Old 11-01-2016, 05:41 PM
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Thanks for that Oliver. I always thought it had to a solvent based glue. Good to know.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #5 of 9 (permalink) Old 11-02-2016, 11:32 AM
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Very interesting but I wonder how that would withstand weather and UV from the sun???
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post #6 of 9 (permalink) Old 11-09-2016, 02:52 PM
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Quote:
Originally Posted by Gaffboat View Post
In a recent post about making pulleys I mentioned that I was going to make a drive belt for them and said I would show you how I do that. This technique could also be used to make an emergency O-ring of any size.

For my drive belt I used 2mm O-ring cord that I stretched between my pulleys and marked the spot to cut. Cutting was done with an exacto knife but a razor blade or utility knife would work as well.

Now, here’s the easy but surprising part: a tiny drop of superglue is applied to one end of the cord and then the other end is pressed against it for about a minute. When the glue has set you have a drive belt and/or O-ring.

I made a small test ring first and when it worked I moved on to my longer belt. The small belt is about 1 3/4” when measured between the two legs of a caliper. I was able to stretch it to over 2 3/8” without the join giving way.

[Sorry the close-up photo is the join is so blurry, I couldn’t get my phone to focus on it.]

There is enough stretch in the belt to give me the tension I need to drive the pulleys and it’s easy to make another if needed. Maybe you’ll find this technique helpful someday. The O-ring cord came from … (where else?) … Amazon.
Thanks for this info. I may be able to use in on some of my wife's sewing machines.
Allen
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post #7 of 9 (permalink) Old 11-09-2016, 03:15 PM
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That is good to know,wish I would have found out about it a few years ago when I needed it. Thanks for this post.
Herb
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post #8 of 9 (permalink) Old 12-14-2016, 02:08 PM
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Hi, guys.

I use to use this trick when the "transmission belt" of my lathe is broken. See pictures 7, 8 and 9 here

http://www.routerforums.com/jigs-fix...tml#post384093

We, woodworkers are everywhere!!!
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post #9 of 9 (permalink) Old 12-18-2016, 07:57 PM
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Great trick! Thanks. It's worth knowing just the simple fact that O-rings and drive belts of the same size can be interchangeable.
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