Originally Posted by eng_ch
How do I find out what edge angles they have by default from the factory?
You don't say if your going to have a shop tune or a DIY job.
You can buy a set of angle guages but if you plan a DIY tune & you have a range of different angle file guides you can use a marker pen to black up an inch of edge & then using your various guides run a stone over the marked area.
For the side angle, if the pen is only removed on the side of the edge nearest the base angle then that guide is less in angle than the factory angle. If the pen is only removed at the top sheet side of the edge then the guide used is of a greated angle than the factory angle. A guide that removes an equal amount off the full width of pen is the one that equal the factory angle.
Once you've found the angle it's worth confirming it at regular intervals along the length of the ski to check that the factory tune is consistent. It's surprising how it can vary slightly along the length.
The same principle applies to the base angle.