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Re: Kuzmin scraping and structure

Posted: Sun Mar 26, 2017 4:28 pm
by vquick
Hi everyone, thanks for all the good info in this thread! I have been aware of Kuzmin's ideas and haven't really used glide wax for years, except for the occasional race. Earlier this season I noticed my skis were really slow in some conditions, and after scraping and polishing the bases they seem much better.

I need a new steel scraper and was considering getting Kuzmin's. It's just hard to find much info (other than his papers) in English. Anyone have experience with the new scraper design with removable blades? How many scrapers do you really need, and what other tools are essential? The roto brushes he sells are very expensive and I'd have to be convinced they are significantly better than standard roto brushes (or non-ski brushes that I could buy at Home Depot).

Re: Kuzmin scraping and structure

Posted: Mon Mar 27, 2017 6:53 am
by Neuro
Can't find any info on the type with removable blades?

FWIW I have Kuzmin and it works well, although it's a bit tricky to use since it's quite small and you need to hold it a certain way with the thumbs to prevent it sliding off the edge. I would have liked a jig for it.

The brush is very fine and of good quality, but don't know if really needed compared to others. I believe the main difference is that there's fluoride already on the brush.

An alternative, but much pricier is Multicut. The basic one has two edges, one plain and one structured. This seems to be a bit larger than Kuzmin and can even be sharpened.

Re: Kuzmin scraping and structure

Posted: Mon Mar 27, 2017 8:56 am
by Magnus Johansson
Neuro wrote:An alternative, but much pricier is Multicut.

Other scrapers are found at http://skimateria.se/sicklar/ and http://www.skigo.se/skigo/produkter/val ... krapa.html

Re: Kuzmin scraping and structure

Posted: Tue Mar 28, 2017 4:08 am
by Neuro
Those attached to a handle are nice, Kuzmin should really have something similar.

Re: Kuzmin scraping and structure

Posted: Tue Mar 28, 2017 2:43 pm
by Loran
Hi

high speed roto-brushes is a brilliant idea IMHO.
Note that the FP brush is another thing ; It is supposed to coat with a thin layer of Fluoropolymer, not polishing.

I have no tested the new blades, but the new tungsten carbide one is promising, at least for the initial job of removing a layer of P-Tex. Then apply a structure and/or scrap a bit with "+" before polishing.

The other required tool is, you guessed, a manual structuring tool. (I'm not convinced by kuzmin's yet. )

Stay safe with a light rolling and thin (0.3mm) linear and maybe a very light rolling intermittent.

For wet snow add a deeper rill linear (1mm, and 2mm when very wet) to the rear half of the ski only. Then add an intermittent structure (or Kuzmin's helical if you want to test that) to the whole ski.

Re: Kuzmin scraping and structure

Posted: Tue Apr 11, 2017 1:08 pm
by vquick
Thanks, all. Even that Ski Go scraper is over a $100 for basically a plastic handle and metal blade. There must be a non-ski tool that would do this much more cheaply.... Feel free to laugh at this, but how about a regular plane with an adjustable blade, like this: http://a.co/d0hzWxQ. Could put some felt or fabric under the base of the tool to prevent it contacting the ski. I have a pair of rock skis with really chewed up bases that I could try it on.

Re: Kuzmin scraping and structure

Posted: Wed Apr 12, 2017 1:47 pm
by Loran
Good sharp tools for, say, wood machinery, are not cheap either.
Also, At least for Kuzmin's or skimateria's, they are not producing a flat base and are not so "basic". The produced roughness is a very very important glide factor.
So, producing a sharp and not straight tool is probably not that easy.