Hackney Tools led me to this archived video which, I do believe, is a vital link to the history of planemaking.
Much as I would have liked to embed the video, I could not. If you value your interest in the history of plane making, or of the history of trades, or of really of anything to do with living history, put your heels up and take the time (45 minutes) to watch this video of a planemaker in action.
Till next, Gary
PS: My apologies, they're Swiss, not French planemakers. I should have known better.