Well I don't have a blueprint on it, but this is one I made.
and as you tell by these temps(although not absolute) the #Rotor platform is a very efficient one.
Here's some spects:
Holes were made with a 7/32" bit.
Total # of pins= 70 on 2x1/4" plates
Block dimentions= 2"x3"x1/2"
Base thickness= 1/16"
Inlet= 1/2"OD. Outlet= 2x3/8" OD.
This block performs better, with my current system, than any of the commercial made blocks I have including: Maze 3, Maze 2, and Spir@l. A huge THANKS goes out to #Rotor for all the help he has given us on making or own variations of his idea.