/ Petzl ice screw sharpening tool - anyone used it?
So far I've been sending my screws to Needlesports to be sharpened in their Grivel machine - tends to work ok but not quite as good as new. Then taking out any particularly bad nicks with a file through the season.
I know I'm being lazy and could just use a file...
But, if it's not too expensive I'll get the Petzl thingymajig because it looks like a clever way of doing a good job.
There's going to be one installed in the CIC Hut for anyone to use as they pass by on the way up
I realise this is slightly left field but you may find this interesting. This method lets you maintain the same tooth length as BD screws ship with.
I've found this can be done without a vice or a flat file with a rounded edge.
I'm probably no the greatest at DIY stuff and that but that pdf is the best advert for one of these sharpening tools yet lol.
Well the good thing about doing it this way is you can make sure you maintain the original BD tooth geometry.
It takes about 10-15 mins per screw so a couple of hours at the beginning of the season each year covers the bulk of the work and then a bit of maintenance as the season goes on. It's not a big hassle.
> I'm probably no the greatest at DIY stuff and that but that pdf is the best advert for one of these sharpening tools yet lol.
Rarely has £60 looked so cheap!! Hell, it's only the price of 1.5 new screws. Even better, you could gang together with mates and maybe pay only £15 each for a quarter share in one.
I think for a very blunted screw (where one or more teeth has lost more than a mm or two) its still going to take quite a while to sharpen all the teeth and get the teeth the same length and the troughs the same depth. How much that really matters is debatable though, but it will make some difference. Also at some stage you'll still want to hand file off the thread from the tips of the screw.
After I've hand sharpened my screws they pretty much are as good as new.
Now if I could just find something I could be good at...
To be fair I did completely ruin one screw the first time I tried to sharpen my own screw by hand without a vice (which is how I still do it) about 6 years back or so.
God knows, I think I was too aggressive, but it didn't look salvageable, points in the wrong place with very much the wrong geometry. The next time I got them sharpened by the grivel machine and that shortened the teeth in some cases to much shorter than a new grivel screw. After that I researched more carefully what to do and worked in small increments and developed my own technique. Later I found the article I linked which gets much the same result as my method but in less time.
I think it's worth it if you badly burr them up.
That looks good and will while away those dark autumn nights... but given the amount of tools and stuff required and the potential to screwing up, I might as well get the Petzl tool...
Yes, I use this already. The Petzl thing would be instead of rather than as well as.
Do you not find the grivel machine shortens the points a lot on bd screws? I used the Needlesports service once, but never again, my home job is a lot better.
How come all you folk are constantly sharpening your ice screws? I can think off only one or two occasions over the past few years that I've needed to sharpen, or rather deburr one tooth with a file on hitting rock. If I feel any resistance when placing an ice screw I'll stop. If the ice is thin I'll not bother placing an ice screw in the first place.
In my first couple of seasons I blunted a few screws going in to rock quite badly. I do find it less of a problem now a days.
Recently I've introduced a friend to winter climbing, he has now blunted a one or two of my screws pretty badly.
I always go through mine at the end of the season and after that WD40 them anyway and will always at least sharpen the main edges / points a little. From there I check them before each trip, quite often nothing needs doing, but occasionally I'll sharpen them as required.
I find it makes a noticeable difference....
Over keenness normally for me. ;)
talk about skating on this ice! impressive that you can actually climb ice that thin!
Same wall, different Nov. http://lightfromthenorth.blogspot.fi/2006/11/winter-has-arrived.html
Yes, it does shorten them a bit but they work ok.
Ron - due to too much climbing in Wales!
I found the longer the teeth the easier to get the bite started. I reshaped mine back to more like BD ones over time.
So sounds like no one's used it yet. Might have to bite the bullet.
Thanks, that's good feedback.
Not enough of the committee do winter climbing....
Thanks for the feedback. Seems not many people have used it yet as it's new but some good feedback. Will put it on the shopping list I think.
I'll leave you to persuade the committee on that one!
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