/ Petzl Ice Screw Sharpening tool
Now all you have to do is find in stock somewhere. (Lyon Equipment should be able to advise.)
I'd be interested to know how it fairs on very blunted screws
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.
Mine are self sharpened and still maintain the original shape (just takes a bit more attention to detail)
This article is good.
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. "
(see notches here)
It's not available yet but should be in the shops this winter.
This was on demo, along with their new lightweight screws, at this year's ice climbing festival in Rjukan and I gave it a try. I thought it was a great tool that worked well.
I'm not sure if they are available yet, however. I've not seen them in stock anywhere.
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.
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.
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.
Cotswold outdoors have them on their website.
Apart from bottoming out how blunt do screws get just being placed into ice? I certainly wouldn't have thought you'd have to change them every season?
That's the problem.
I've often had to knock a plug of dry muck out of customers screws before sharpening them...
"buying new ones every season."
Does anyone do this? Hand sharpening mine takes an evening every autumn
Obviously depends on usage.
I'm sure Alan would use his a lot more than I would use mine so would maybe warrant new screws every season.
I'm the same as you though a DIY job with my cheap file set from b & q and some wire wool.
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.
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