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Reducing Base Angle

I'm tuning a friends skis and when I checked the base angle, I found them to be around 5 degrees - side angles were three degrees.
Any suggestions on how to handle this?
I realize that grinding is required to reduce the angle, but how much material needs to be removed to get the base bevel in the .5 - 1deg range. The owner is concerned about how much material needs to be removed to get these in the range.
Any thoughts?
Assuming edge width is 2mm, amount of material (thickness) to be removed to get 0deg bevel is equal to 2mm * tan (5deg) = 2 * 0.0875 = 0.175mm.

Cheers,

cfr
I dunno....I think there are grounds for a major dispute....I get 0.171 mm for some reason .

(It depends on how much cutting had been done to the side edge. Less side edge=less base edge=less base grinding needed.)
I feel sorry for whoever gets stuck grinding that ski. Yawn.
Quote:
 Originally Posted by quickk9 I'm tuning a friends skis and when I checked the base angle, I found them to be around 5 degrees - side angles were three degrees. Any suggestions on how to handle this? I realize that grinding is required to reduce the angle, but how much material needs to be removed to get the base bevel in the .5 - 1deg range. The owner is concerned about how much material needs to be removed to get these in the range. Any thoughts?
Not much choice but to grind. Very few people ski better on a base angle greater than one degree; five degrees will certainly have a negative effect on the skiing experience.

Whoever does the grind needs to pause and measure periodically.
Forgot to mention previously that the approximate thickness of the base material needing to be removed is about the thickness of two pieces of bond paper....give or take.
Quote:
 Originally Posted by Alpinord Forgot to mention previously that the approximate thickness of the base material needing to be removed is about the thickness of two pieces of bond paper....give or take.
Fair enough. I know that there is no choice but to grind. I guess that what I don't know is how much base can be removed safely?
Quote:
 Originally Posted by quickk9 I guess that what I don't know is how much base can be removed safely?
You'll probably be OK. Then again I've ground through to core on the very first grind of a new ski. Depends on how consistent the ski was when it came out of the mold...if it had any screwiness the finishing process will have already removed a lot of base material.

It is one of those things where you don't have any choice, so Just Do It and there is a 99+ percent chance of it working great.
As Garrett said, grind 'em.

You really only have 3 choices.

1. Ski 'em how they are.

2. Throw 'em away.

3. Grind 'em flat!!!!!

Seems like 1 & 2 are not good ooptions!:
Quote:
 Originally Posted by Atomicman As Garrett said, grind 'em. You really only have 3 choices. 1. Ski 'em how they are. 2. Throw 'em away. 3. Grind 'em flat!!!!! Seems like 1 & 2 are not good ooptions!:
I here you. They aren't my skis. I dropped them at the shop yesterday and they will see what they can do. They weren't thrilled about taking off as much material as necessary to get them flat.
I find it hard to imagine that the company ground them this way. I am wondering if the edges were put in at an angle due to poor quality control.:
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