UKC

I bought an Edelrid Rope Tooth Knife with the intention of carrying it on a carbiner with some cordelette on routes where abseiling is unavoidable and the in-situ tat is of unknown quality

Edelrids's description is: "Large swivel hole for attaching to a harness or backpack with a carabiner"

However it doesn't seem to fit on any of the caribiners I own!

I wany it to sit at the "bottom" of the caribiner (i.e. the hinge end) so that I can clip more easily to the harness. I thought it would go round an oval but it won't on any of mine (DMM, Black Country)

On some of the caribiners I tried, I can't even get it on far enough to close the gate!

The only one I had any luck with is a DMM Spectre, where it it possible to pass it over the wire gate, but it still sits at a bit of an angle.

Does anyone have any suggestions?

Plastic one from a pound shop?

A short loop of accessory cord 

That's a fair point, though in that case the hole is much larger than necessary!

You’re right - seems to be a bit of a flaw with this knife. Here’s a helpful YouTube review showing several knives including the Edelrid. You can see him failing to get the knife onto a carabiner at around 3:26

https://youtu.be/GjGGTnXLpns?si=NjjNyADjKrKDVkaD

send it back and get a Petzl Spatha knife? The swivel hole is slightly larger and not as thick so it even fits even on bigger screw gates. Personally I think the Rope Tooth fits ok on a Spectre as you say, you just need to put it into the carabiner but then slide it down the gate the other way to the bottom as it won't go past the angle as you noticed. The Spatha by comparison will go round the tight bend of the spectre or other carabiners easily without jamming.

Edelrid rope knife hole might fit an Edelrid Nineteen-G as that's  a fair bit smaller than usual krabs (see one in my pic above), sorry don't have the same knife to be able to test that theory 

I have mine on the (super expensive) DMM oval accessory biner... 

Think I checked a 19g earlier and that was no better.

Wow, that really is a design flaw (or at least a very weird design decision). Sounds like OP needs to choose between a "toy" keyring carabiner or a bit of cord to allow a "real" carabiner to be used

I have the knife and have carried it on a spectre 2 for half a decade. It can sit in the lower portion of the carabiner(under the gate) on the following biners in my collection. 

Spectre 2

Camp photon wire

Wow I expected that to be a longer list. 

The Edelrid kiwi would fit but I have a slide lock on mine and it interferes. 

IMO a bit of cord is much better - I have a petzl knife but have found it's far to easy to jam the corner of a caribiner in the hole, and use that to torque open the knife. Have been too scared of that happening on the back of my harness since so won't be taking the bit of cord off anytime soon! Have a go, you'll be surprised!

IMO a bit of cord is much better - I have a petzl knife but have found it's far to easy to jam the corner of a caribiner in the hole, and use that to torque open the knife. Have been too scared of that happening on the back of my harness since so won't be taking the bit of cord off anytime soon! Have a go, you'll be surprised!

Thanks for all the replies.

For what it's worth, I asked Edelrid support and they recommended a non-climbing-rated gear carabiner

Which is lighter and more compact, so one of the two obvious solutions, the other being the cord.

Downsides? Well perhaps more fiddly to get on/off harness if you have large hands/gloves on - not something that bothers me. Or if you subscribe strongly to the idea that everything carried on the harness must be rated - again, not something that bothers me personally.