Pneumatic components are now properly configured and attached to the frame

We have successfully configured all of our pneumatic components. A 1/4" hose with quick disconnect fittings on either end will connect the air compressor to a male safety coupler. The threaded end of this coupler is attached to a three way air manifold, which has one of its openings blocked off by a plug. Two 1/4" brass nipples (6" in length) are screwed into the other two openings of the air manifold. At the end of each of these is a solenoid valve, which then connects to a light weight 1/4" air hose. The NPT connections at the end of each hose are screwed into the bottom of a Husky pistol-grip blowgun. The outlet of the blowgun is attached to a short 1/4" nipple with NPT ends, with a custom made air manifold on the other end of the nipple.

After finalizing our pneumatic setup, we attached it to the arcade game frame. First, we made sure to cover all the threaded connections with teflon tape in order to minimize air leakage as much as possible. Once this was done, we drilled three holes in one of the sides of the frame. A 3/4" diameter hole was drilled 10" from either end of the plywood side. In the middle, a 1 1/8" hole was made using a hole saw. Afterward, we laser cut a rectangular piece of 3/16" thick wood with a circular hole in the middle. This piece was placed in between the male safety coupler and the three way air manifold, and was attached with screws to the inside of the frame, with the hole in the piece being concentric with the 1 1/8" hole in the frame. This was done with the purpose of making the safety coupler easily accessible from the outside, so that the hose to the air compressor can safely be disconnected when it becomes necessary to move the frame.

Next, the air hoses running from the solenoid valves to the blowguns needed to be securely routed through the frame. At the same time, we needed to ensure that the linear motion of the blowgun is as comfortable possible. We ended up testing various setups for the hose routing, and eventually settled on the one displayed in the attached image. Each hose is positioned in a circular arc and held down via 5 steel clamps. The obvious incongruity in the bending of the two hoses is intentional and can be attributed to the fact that the large opening in the frame is slightly to the left of center of the frame side in the image. If we had made the placement of the two hoses be more like mirror images, the player on the left would have more of the red hose on the outside of the frame than the player on the right would have of the blue hose. Consequently, this would allow the player on the left to move his blowgun with slightly more ease. Since we wanted to make sure that neither player has an advantage, we needed to account for this, and so we positioned the red hose such that it would have the same length on the inside as the blue hose. Each hose then leaves through the closest 3/4" hole, and goes around the side of the frame to the opening in the grip of the mounted blowgun.