So I watched Lakes' video.
REALLY??? You would take any advice from this guy???
#1. That base edge file is ginourmous and way to coarse for a base edge. And he goes at that base edge like a caveman. I guarantee that ski is over 1 degree.
You should be using the finest file you can on the base edge like an 18-22 TPC for base edge beveling. 1 degree = 1mm Gap @ 60MM (SVST's True-bar has a mark at 60MM) across the ski when your true-bar is matched to the base edge angle. .5 degrees = a .5 MM gap
#2. metal debris from filing does not affect or get on the edge your are filing, The problem is, it can get between the tool and the p-tex and scratch the heck out of your bases. WHERE IS THE BASE TAPE???? I always have a paint brush handy and brush the ski off and the tool between passes and always use base tape when doing side edges.
And then he does not flip the ski around on to do the opposite base edge , the first base edge he does as I do and would expect and then he is back to his goofy jammed up arm strokes on the side closest to him.
#3. Now I know I will never do my skis bases towards me. He is all jammed up, you should always be pulling the file towards you. You should be standing with your arms comfortably extending and make smooth overlapping passes as you evenly pull the file towards you with no pressure on the file. He is pushing that file towards the edge hard to keep it in place. NO finesse again . I don't use any downward pressure on my side edge, and let the file do the work. Same thing with the sidewall planer. Long smooth strokes, He is just really heavy handed!!!
Look how gently and lightly and finnessefully I can hold the file and the tool! Not this 2-handed caveman style tuning.
Any pressure is direct straight down on to the edge under my thumb and I have total control of how hard I press...............or NOT!