In reply to mmmhumous:
> 1. With ice screws, presumably (for a given placement) a well placed smaller screw is better than a longer one which has bottomed out, and you’ve had to tie off?
In general, yes. Shorter screws are not even much weaker in good ice and if the surface ice isn't very solid, you need to be clearing it away to place into the good stuff that's hopefully behind it regardless of what length of screw is in your hand.
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> 2. I'm guessing wider screws are stronger than skinny ones?
Maybe? Most modern screws are similar now I think though. By far the most important thing for the strength of your screws and the thing to really focus on, is the quality of the ice into which you place them. Go for clear / blue dense looking stuff, place into the back of grovves, cavities etc. Avoid the edges of bulges etc if possible.
> 3. Anyone got any top tips for getting the screw to bite? These were the first screws I've handled, so don't know if they were sharp enough. I think my choice and preparation of placements was OK, but not sure about my technique for getting the screws started, I really struggled to do it one handed.
My screw placing routine is:
Get a VERY good axe placement above and slightly to the side of where you want the screw to go. Get comfy below it on decent feet and get your arm straight if possible.
Clean away any bad ice / protuding ice from your chosen spot which might stop the hanger spinning. Some folk chip a wee starter hole (I tend not to bother).
Hold screw at hip to low chest level(no higher) and just off to the side of your body (this position lets you push on it properly). Twist your wrist anti-clockwise as far as possible, then press the screw into the ice (as hard as possible, that's why you need the good axe placement) and crank it as far clockwise as your wrist goes. Repeat this twist motion maybe three times and it should hopefully hold it's own weight. Once it is doing this, give it maybe three more turns holding the end of the screw each time to get it in a bit more. That should get it deep enough to flip a handle out (if it has one) and blast it all the way in.
Pay attention to how the screw feels as it winds in. Ideally, there will a good amount of constant resistance and a nice even core extruding. Areas of very little / no resistance are not good news, the bigger they are the worse. If the ice you screw into turns out to be rubbish underneath, then maybe take the screw back out, clear it and try again somewhere else.
If the ice is shallow screw in carefully and if you think you get to rock, then STOP! One solid heave once it's touching is enough to signifiantly blunt or ruin a screw.
If you're leashless, feel free to interupt this process as often as you like to shake out, move about, stay comfy and not pumped.
Once it's in, flip any handles away, set hanger downward if possible and clip. Done.
> 5. Why did warthogs go out of fashion? They seemed really easy to place!
Because they are a bit rubbish. If they place "easily" into ice then they're not going to be much cop when you fall on them. Into ice dense enough to hold falls, they shatter it quite badly.