CYCLOPS

Step 2: The Cut

Important to not your offset from plate to plate has to be set before the cut.
I decided to go with a radius instead of a straight line, used a spindle sander to sand and even out the edges, be cautious aluminum is a great heat conductor and these parts when sanded or cut get very HOT, DO NOT USE gloves to protect you from the heat, its very dangerous when a saw blade is being used. just be patient, quench in water, dry then continue....
Remember that the stack had the top and bottom plates reversed, so in the picture bellow the 4"speaker holes in the plates are on the right (opening), the left is solid... i decided to go with a vertical standing clock so i needed more plates with the 4"  hole, so using the holes in the reversed top/bottom plates as a guide, I proceeded to cut the hole out.
My plan.....
using the new cut holes to frame the "window" for the tube, then splitting the other set cap the top and bottom of the chamber....