as promised, here are pics of my dual blast cabinet with modifications
i couldnt get the lid off of the bong bucket , but the insides look just like the link above (post #13)
you can see what i mean by turning the plastic arm ring collars around 180 degrees, and worm gear clamping the gloves on the outside of the cabinet i hope. look at the pics inside the cabinet to see the collars from the inside of the cabinet.
bolting them together is easy. you take the door off of the cabinet on the left and trace the pattern with a sharpie on the outside of the cabinet on the right. drill a hole inside of the pattern lines with a holesaw and cut the pattern with an air nibbler. i cut the bottom lip lower so that it only protruded above the screen by about 1/2 inch also. this can be done by taking some measurements and lowering the pattern on the right side before you start cutting. Then transfer the pattern from the right side, to the left side to cut the opening lower.
Drill holes in the flange that you created, and bolt cabinets together with caulk between the seems and outside. center legs will need to be cut so that they only support the cabinets on the face of the cabinet (where the arm holes are - look at the pics and you can see how i cut them) Repaint with rustoleum red and assemble it all together. Add extra dryers for each side of the cabinet with quick connect fittings for the air hose. Use a larger dryer coming just off of the compressor to help remove water from the lines.
also have one of the smaller blast cabinets like you have in the picture that is dedicated strictly to glass bead. The large double cabinet uses aluminum oxide, or black beauty from time to time. will need to see about performing some of the feed mods to the small cabinet.