Very Nice SKB,
The design appears to have much in common with the original models sold by Don Allen.
In the late 1970's Don came to me and I built the first 2 machines for Don that were the basis of the duplicators sold by Dakota. (Don, lived in Northfield, Mn at the time) The very first one I built was sold to Al Lind (Don & Al were best friends). Last time I talked to Al, a couple years back, he was still using the machine. Which, I would stay is a testiment to the basic design concept of Don.
SKB, as you know it is no small task building one of these and let me say again, Nice, very nicely done.