In reply to I am the God of Strathyre:
> (In reply to chris tan)
>
> It's quite difficult to figure out the knots and even the tape/ rope configuration in your pics.
1. The top know nearest the QD is just a fig 8. That slits the sling into 2 loops.
2. I used a french prussik as the sliding knot.
3. The bottom knot ( optional) is just an overhand. This is used to shorten the length of the slide.
> I'm interested in why you would choose tape as a medium for the prussik to slide on? Is it not lot less absorptive than kernmantel rope?
I rigged it out of what I had out at the time. The idea is to be able to improvise this out of what you have at your disposal. A static sling would probably give a better sliding action but I didn't have one handy to test with.
> Would there not be much higher risk of melting?
You're going to have to generate a lot of force and slide a long way before the nylon melts. In that case, I suspect the dodgy protection would have popped long before melting occurs.