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What grit paper for structure?

post #1 of 13
Thread Starter 
Started getting skis ready today... back is sore and I've got a bit of a buzz..

Last years daily ski... this years third in line, definitely rock ski has very little structure left. Not going to bother having it ground but I figure it should be freshened up. So I'm wondering what grit paper you would recommend to cut a general purpose structure?

My brass brush, even heavy handed, won't open it up at all.
post #2 of 13
Sandpaper (even silicon carbide paper) will not put a "structure" (cross-hatch pattern)into your base, only some linear micro scratches. Only a diamond-dressed stone grind will. Perhaps you should buff them a bit now to start the season, then go for a full-on pro tune when the snow gets deeper and cleaner.
post #3 of 13
Start with 80, then 120, then maybe 220. You'll need to brush after that, and fibertex so you remove all the little P-tex hairs. Remember to wrap the paper around a square, flat, wide sanding block.

If you wnat more info, try this nifty tool: google.com
post #4 of 13
You will never remove those "little hairs" with a brush or anything else....

Don't frickin' sand your bases. They will be slower than they have ever been and you'll end up getting them stone ground anyway.
post #5 of 13
Just ski them across your driveway.
post #6 of 13
This tool http://skivisions.us/504.html works well.
post #7 of 13
Quote:
Originally Posted by U.P. Racer View Post
You will never remove those "little hairs" with a brush or anything else....

Don't frickin' sand your bases. They will be slower than they have ever been and you'll end up getting them stone ground anyway.
Nah...people have been sanding ski bases for longer than stone grinding has been around. Both for repair and structure. It takes some work, but you can remove the hairs. Besides, he said they're his rock skis. The worst that can happen is he spends an hour drinking beer a nd working up a sweat to give it a try.

Swix sells sandpaper, so does Tognar...but a decent silicon or aluminum oxide will do fine. Just don't gorilla it to death...and use some soapy water to lubricate the base.
post #8 of 13
Quote:
Originally Posted by billyymc View Post
Nah...people have been sanding ski bases for longer than stone grinding has been around.
People have been doing lots of things for years that don't necessarily work well.....

I'd never do it to a pair of my skis...
post #9 of 13
Quote:
Originally Posted by SkiMangoJazz View Post
This tool http://skivisions.us/504.html works well.
Agreed.
post #10 of 13
I do my own and this thread (along with several others) enumerates the whys and I'm very content with the performance. YMMV.



Billyymc provided one good approach realistic expectations on the work and since they are rock skis, sounds like a great opportunity to experiment. What about using 50/50 denatured alcohol as a lube? Interesting to try the soapy water approach. Because of the hairies, I tend to use our rilling bar and steel brush more and less sandpaper though. Reduces the clean up. Now that we carry the Ski Visions base flattener and structuring tool, I'm looking forward to an even easier and better job.
post #11 of 13
Quote:
Originally Posted by U.P. Racer View Post
People have been doing lots of things for years that don't necessarily work well.....

I'd never do it to a pair of my skis...
UP - I'm not arguing that well done stone grind isn't better. O.P. wanted to know about sandpaper. I've done it, it works fine for me, but perhaps I just don't have a clue. For a pair of rock skis, my opinion is that it's worth a try. For my recreational 30 or so days of skiing a year, it also works fine...but then I've tried the Felix Process and been perfectly happy with that too
post #12 of 13
I use this to structure base reapirs. for an inexpensive tool it works pretty well. You can probably find it on the web cheaper somewhere.


http://www.fktools-us.com/ProductDet...t_Number=MT710
post #13 of 13
Thread Starter 
Well, I gave it a go. Not too bad. Wrapped some 120 grit on a sanding block and made a number of fairly light passes. Paper clogs very quickly and I had to keep cleaning it. Did do a nice job of opening up the base, especially along the edges where the were extremely smooth and sealed. Fibertex grey then purple left a nice finish. Two wax, scrape and brushes with Swix base prep 88 later and they look pretty good. If they weren't rock skis then I think I would give 'em another couple of cycles of base prep. All in all I didn't get the depth of structure I was looking for but they look much healthier. I think in the end I'll be order a rilling bar at the very least and probably a steel brush.


Still have one pair that needs to be stone ground and start all over. Glad the snow hasn't started falling. Thanks all!
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