This one is made with Stainless, Bronze, and Ebony. If I hadn't made the adjuster, I'd probably be a bit confused at what I was looking at... so, let me explain.
The top screw applies downward pressure onto the blade. The pin shaped end of the screw fits into a hole in the adjustment mechanism. This creates a pivot point.
The back stemmed knob drives a 1/2'' diameter pin via a 1/4''-40 screw. The pin fits into a corresponding hole in the blade. This controls the depth of cut.
The thumb wheel has internal threads (also 1/4''-40). It drives a bar left or right. The bar is fit tightly inside the planes side walls. This allows you to skew the entire apparatus and blade within the plane body.
The end result is a tight adjustment mechanism. Best of all, it allows the user to make very precise depth and skew adjustments "on the fly". There's no kneed to loosen the blade, make test cuts, or any other finicky things... just dial in your cut, go to town, and adjust as you see fit to.
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I can't even breathe .................
