My guess is I've made twenty or so Krenov style wooden planes over the last year....most didn't work as well as I would like. I guess I'm a slow learner but I do not give up easily, over the last month each planes has been better than the last. My last one is about 220mm with a 31mm iron and is sweet. It is the second from the left, the others were made last month and are also very good planes.
They, the planes, are easy to make. A couple or three hours plus the time for the glue to set and you have a very nice plane. I do the rough dimensioning with power tools, the finishing including cutting the mortice for the chip breaker screw by hand.
I think I've figured it out, I've one cooking as I type. It will be in the 230mm range with a 44mm iron and made of Bubinga like the four in the photo....more tomorrow once the metal hits the wood.