The following ‘in process’ school video project may provide you and others with visual aids and another perspective on diamonds, files and edge tuning.
For those parents whose teenager knows more than you do for all things technical, here is:

(FAQ)
Measuring and cutting climbing skins can be easily facilitated and more convenient by securing the ski to a vise. With the ski secure, attach the tail as directed by the manufacturer and pull towards the tip to measure the bend at the tip bale in place. Cut the excess and peel back and cut…

The US Snow Depths can easily be compared via this animated map from the Weather Underground:

Sharp and smoothly polished edges, with correct edge geometry (aka properly ‘tuned’) are critical to maximize the carving capability and overall performance of your expensive board(s). What tools and techniques do you employ?
There are simply too many variables to grasp without time, experience, defining personal goals, cost and other considerations. As with skis, snowboards…

The flatter, properly structured and defect free base will accept wax and glide better than one that is not. A better slide will also help the turn and basically overall enjoyment while out ripping it up on the snow. Keeping the bases in shape also prolong their lives and value.
One common misconception is that…

Every home tuner needs a decent permanent or portable work area, ski and snowboard securing system and general shop tools and supplies to perform a variety of tasks.With a good set up that works for ones personal needs and budget, tuning, waxing and base prep tasks become easier, quicker and more enjoyable.
Good lighting, power,…