This part of the model looks complecated but as it turns out is really easy. The rings are made from 1/4" brass stock, Its the K&S stuff again. The thickness is about 1/16 and is easy to shape into the rings using a small locking plier and a regular plier.

Once these rings were circular enough and had a one inch inside diameter, I started on the connecting frame. I measured from the plan the longest point to point length of rod and cut two of them. I penciled the areas to be removed from the tubes and coped it away with the band saw. The trick here is to solder a ring to the first piece of pipe, then cut the other end while the newly affixed ring keeps your second cut prefrctly square as it rests on the saws table.

The other two rings, top and bottom ones, are done the same way except you have to use the same techniques as were employed on the Cage to joint it all up.

The ring assembly is placed on the Base and is soldered into place all at the same time. I placed the ring assembly on four rods and the solder paste kept it all still as i fixed one of the four. Mine came out with less than 1mm deviance when measured cross corner :) The pipes that link the rearward center to the frameward base are simply given a fiew passes with a 1/4 inch round rile to make it nestle into its place and a flat file allows you to place the pipe on the corner for soft soldering.

The last things to do are to place the piece of 1/2 inch pipe through the center and solder in the four mounting points for the Reaction Chambers. The project took me less than six hours once I started.

The large ring arround the assembly is the final piece of brass to complete the module. The images here make it look as easy as it really is, a little heat and solder and its done. The last shot shown above is from after I sprayed the assembly with white primer.

Good Luck, Let me know how yours turns out.