In reply to Martin W: Having for years just sharpened my screws with a file, I'm a bit sceptical about the need for complex sharpening systems; but that widget looks good. Simple and probably won't be ridiculously expensive.
I do wonder though if it will only work on new-ish screws where the over all tooth shape is virtually unchanged rather than on rather old self sharpened screws where the underside of the tooth tends to go from a concave 'overhang' to just vertical.
In reply to Martin W:
it sounds like it may only work on petzl screws due to the notches
"To accompany the new ice screw collection, Petzl created the LIM'ICE sharpening tool offering a quick and easy way to sharpen your screws all by yourself. Dual sharpening guides use the self cleaning notches to lock in the screw for a more precise sharpening on both sides of the screw teeth. "
In reply to CurlyStevo: The Urban Rock article does state: "Finally, the Lim’ice will also sharpen Black Diamond, Grivel and DMM Ice Screws. Basically any ice screw with the same configuration as the new Petzl Laser Speed Ice Screws." Of course they could be mistaken/lying. Again, I'd expect Lyon Equipment to be able to offer definitive advice.
In reply to CurlyStevo:I was asking Petzl dealer for my country about this and he assured me that indeed you can sharpen BD and Grivel screws with it. He also stated that " half the screws in my region" have been already sharpened while testing the first piece that arrived.
In reply to matejn:
That is my understanding also.
It is not in stock with my shop yet but expecting it for this winter.
Will be interested as have sharpened hundreds of screws with grivel machine and dozens by hand. It will make a big difference to UK climbers to have sharp screws. Some of the screws handed in for sharpening have been as blunt as a poker.
In reply to Hay:
I got a load of my very blunted screws sharpened by the grivel machine and they came back with very short points. When I sharpen them by hand I can maintain the point length by fileing all the edges (and troughs) not just the sharp one.
In reply to CurlyStevo:
I guess it depends who is running the machine. It is also set for the grivel tooth angle ... That means BD screws will lose a bit of tooth length.
The tooth length does help stick the screw but it is the leading edge that cuts. The grivel machine is very good at that bit.
> Using them a great deal here in Scotland its very easy to bottom them out even with care
Same where I climb, we climb a lot of thin ice, where particularly early season you'll be looking for areas where a whole screw is likely to go in, yet normally ice screws are the only pro so you don't have much choice.
You touch the rock enough that I often take my file to the cliff with me.