Re: Best Way to Tie Off Surgical Tubing
 

If that is what is driving the decision, it sounds penny wise and pound foolish.

Re: Best Way to Tie Off Surgical Tubing
 

It's not the friction of the plug inside the tubing that's responsible for holding tight.
The plug is trapped by pulling up tight against the outside cinch.
It's the cinch of the Kevlar thread outside keeping the monkey's fist inside the jar.

Re: Best Way to Tie Off Surgical Tubing
 

Yes. If the plug is lubricated, as shown in the video, then what you describe above is the main thing keeping the tubing from pulling away. All (or most) of the stress is concentrated at the tie circumference where the tubing is crushed by the Kevlar thread biting into it.

With a less effective lubricant, the tubing would grip the plug and distribute the load over a much greater area.

My question was not whether the cinch should be eliminated, but whether there is consensus agreement in the speargun community concerning the wisdom of using such an effective and permanent lubricant. Or are there some who advocate using a less effective lubricant (for the reasons stated above).

Re: Best Way to Tie Off Surgical Tubing
 

FORGE THEM IN THE FIRES OF MOUNT DOOM!!!!!!!!!!

In all seriousness, though, use zipties and nuts. The zipties are great for holding it down, but a nut will keep it stuck on there for good (it is also reusable, whereas zipties only last for one use).

Re: Best Way to Tie Off Surgical Tubing
 

On the other hand...
... as will the sharp corners of metal nuts