One project that I will not get out of my head until I finally do it is my own infill plane. What I want to make is a plane of approx. 5.5" length with a 1.75" iron.
Planning on 1.5" sides with an "overstuff" bringing the side height up a little over 2". 50 degree cutting angle. The last design point would be putting the mouth at about 1.75" from the leading edge.
All of those measurements are approximate...and are my starting point. There are, however, a few dimensions that I feel may be too important to be left to chance. At the moment, I can do everything except turn the lever screw. Once I have my lathe back up and running, I'll be able to take care of that.
Since I know several members here have made their own infills, I am curious if anyone may have some rule-of-thumb, or general guideline measurements for my three missing dimensions: a,b, & c as shown in the picture: ("a" being the angle between the lever and iron, "b" being the distance from the center of the lever pivot and screw, and "c" being the distance from the bottom of the plane to the pivot of the lever)