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question about base structure & flattener tools

post #1 of 5
Thread Starter 
I am looking at the skivisions ski base flattener & structure tool in the tognar catalog, talking to one of the guys there he told me that using this tool would make having to go to a shop for a stone grind unnecessary, anyone use this tool or know of it.
thanks bteddy
post #2 of 5
Yes, I use it. I tune all my own skis, race, recreational, telemark, my girl friends, sometime others for some beers so I use it a lot. It works but it's not a panacea. The ski vissions base flattener worked really well when bases were softer. With todays sintered bases, they are really hard, the tool still works but requires a lot more effort. If I get a ski that is really base high, I can spend 3-4 hours on it. Each pass only takes off a fraction of a mm. You also have to know how to use it. It's easy to skip, if you don't have the knack for it, while planning and put a skip gouge in your base, which requires even more work to remove. I would say this about the tool. If you are at all what some would term as a "handy man", i.e. you've worked with wood ( planning wood), you're mechanically inclined, basically you know how to handle tools; and you really want to tune your own skis, go for it. What some folks in my race club are recommending folks interested in the ski vission base flattener is: get the stone ground once a year if your a racer, or once every 2 years otherwise, and use the base flattener to touch up the base through out the year. Myself, I haven't had a ski stone ground in years and will stubbornly work for hours to do it myself, because I know it's being done right. Lot's of horror stories about stone grounds out there.

Oh, one more thing: If you get the tool, plan on working on a pair or dumpster skis first, until you get the feel for the tool. Also, I find I need to deburr the metal cutting bar often.

[ January 09, 2003, 12:23 PM: Message edited by: SCRUFFY ]
post #3 of 5
As said, it is a decent tool. But it takes a bit to learn the better ways to use it. For structure, use silicon carbide sandpaper (the gray or black stuff) wrapped around a file or straight dowel rod 3/4" or bigger. With the skivisions tool you have to keep the steel bar very sharp for full effiency. I hardly use it any more.
post #4 of 5
I used my Skivisions base flattener a lot when skis were narrower. I used the steel blade to plane down base high conditions and also to plane the edges and base to correct a concave condition. The original cutting bar had grooves cut in the center of one edge which were handy for cutting down the base high area. The current wide bar does not have this which makes flattening the base high area more time consuming. These days I mainly use the tool with the stone blade to remove oxidized base material and create structure. This can be done equally well and less expensively using the silicon carbide abrasive wrapped around a dowel or tube as described by John J. Tognar sells a sanding tube for this pupose which has a lengthwise slot cut in it to hold the paper tight.

If I have skis that are base high I prefer to use an old fashioned cabinet scraper. I sharpen it by pulling a file along the edge so that it leaves a burr, which gives a nice easy to control cutting action on the ptex. Pushing the scraper from tip to tail you can bend it a little bit in the middle by pressing with your thumbs to make it cut more in the middle and less along the edge, or you can bend it the opposite way to make it cut more along the edge and less in the middle. If the skis are concave I sometimes use a Panser file to flatten it because this will cut both the steel and the ptex, but you really have to be careful with this tool because it can take too much off if you use too much force.

The Skivisions tool works fine, but it is expensive compared to some other alternatives, and the steel cutting bar is a pain to keep sharp enough to be useful.

I do not trust stone grinding. I have had skis stone ground which were practically unskiable afterwards.

post #5 of 5
Thread Starter 
thanks for the replys, I had ordered this tool & a few other items today, fortunatly I am very good with tools I even free hand sharpen my titanium 135 degree splitpoint drill bits on a bench grinder with a smooth stone so learning to work a tool is no problem, if owning this tool makes trips to the ski shop unnecessary than it will be worth it as I can have my skis ready to go when I get to the ski hill instead of waiting for a ski shop to wax & tune my skis, of course like all things there is cost involved, between ebay , tognar & the race place I have spent 4-5 hundred dollars on wax & tools but I started with nothing.
again thanks bteddy
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