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Unread 25-01-2017, 13:44
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Attaching Surgical tubing together??

Our team is building some intake rollers and considering using pulleys with surgical tubing as our intake rollers. Does anyone have any suggestions for cutting and attaching the surgical tubing together in a continuous loop. We are using 3/8 tubing with 1/8 center hole. We have prototyped this but but someone there had some experience with attaching our tubing together so it con't come apart at competition. Any suggestions?? Thanks so much! - go teams!
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Unread 25-01-2017, 14:07
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Re: Attaching Surgical tubing together??

If you use poly cord (round urethane belting, it's called at places that sell it) you can fuse the ends together with heat, or if you get the hollow type, you can buy connectors that look like this
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Unread 25-01-2017, 14:11
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Re: Attaching Surgical tubing together??

The way we have made surgical tubing loops is usually with zip ties. What we do 8s have over hang between the 2 ends of the tubing enough for 2 zip ties thej we would stretch the over lap to its limit and while its in tension would tighten the zipties around it as tight as well could using pliers then release and its done.

I know mcmaster also sells barbs that go into the ends of the tubes but not sure how well they work under tension
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Unread 25-01-2017, 14:13
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Re: Attaching Surgical tubing together??

The barbs work well on urethane tubing. I don't know how they'd work on latex tubing...you could give it a try. But while you're ordering stuff there, buy some urethane tubing also
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Unread 25-01-2017, 14:13
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Re: Attaching Surgical tubing together??

Using alcohol as a lubricant, just slip the tube over a round bar of metal. Works well for sling-shots.

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Unread 25-01-2017, 14:43
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Re: Attaching Surgical tubing together??

Last year we cut off the head of a bolt and put about 1/4 inch of thread in each side and super glued it then wrapped it in electrical tape and it never came apart
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Unread 25-01-2017, 14:43
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Talking Re: Attaching Surgical tubing together??

Don't try fusing the ends together, I've tried this and it doesn't work. Haha it literally just starts dripping black juice and makes a huge sticky mess, that never solidifies.
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Unread 25-01-2017, 14:44
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Re: Attaching Surgical tubing together??

We just use single overhand knots and leave an inch or so of loose ends on both sides intentionally in our prototype and it seems to work fine. The bulky knot and ends help to scoot the fuel balls into and thru the double roller intake we are testing. If using this idea just be careful those loose ends don't whip out and extend past your overall envelope as I understand that is a no-no. No knots have come undone yet but there is only less than an hour on them running constantly.
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