Just made 5 of these and your instructions were great and these fluid beds work out perfectly. The whisper 60 paired with those plastic valves really help fine tune the powder movement in the cup. With the "buy in costs" for material you can build 20 of these. I used a miter saw to get smooth cuts on the PVC. Thanks for the video!
I made a dozen of these fluid beds. I made labels and applied them. I also wanted to tell you about the Spigot plug that I used on tod. The spigot plug is loose fitting on the 2" tubing. I found that i could take a 3 oz plastic SOLO drinking cup and put over the spigot plug and push it down and then cut the excess plastic off, that it fits the loose gap on the tube. the rolled drinking edge leaves a 1/16 " gap. Now you don't have to worry about your paint spilling out.
Thanks for your comprehensive video. i like the fact you are offering a more cost-effective design. I wanted to comment so others don't make the same mistake I did building one of these. I placed the paper filter on the 2 1/4" side of the coupler. This will not work like this; it has to be on the 1 1/2" side. After trying several air sources, filter paper types without luck, I went back and reviewed your video and discovered my error. Thanks again.