[jaeckel]

> [...] a string [...]

Does someone have a recommendation for a specific material the string should be made of?

[upofadown]

Back in my day the local telephone company used waxed lacing cable for that sort of thing[1]. These days it seems that polypropylene string is popular (search on "conduit pull string").

You basically want something that is slippery and will tend to not get stuck. I have used Dacron fishing line, but that is mostly because I had a bunch of it laying around.

[1] https://en.wikipedia.org/wiki/Cable_lacing

[relaxing]

They also make bottles of cable pulling lubricant for this purpose.

[sgarland]

AKA boy butter [0].

0: http://www.electricalslang.com/Slang/boy%20butter

[madaxe_again]

It’s really overpriced. Sex lube and veterinary lube are the same stuff and much cheaper - you can get it powdered and mix your own.

[brianwawok]

The sell pulling string in the electrical section of the hardware store.

[wlonkly]

But make sure you don't buy pushing string by mistake!