The term”vacuum”implies several things depending whether you are working on space equipment, clinical instruments, or even internal combustion engines. In our sphere it is so often utilized as a method to draw bubbles out of resin castings, for which it is a fairly quickly attainable partial vacuum. It’s something [Fab] is utilizing, in a vacuum chamber made from Plexiglass. An easy Plexiglass box would collapse under the air pressure by itself, so to alleviate that it’s made from a piece of tube, and with an internal frame of aluminium extrusion with 3D printed joints to enhance it from the inside. A pressure sensor permits policy of the pump that drives the vacuum, and connections are made to the chamber utilizing pneumatic hose ports. It’s not immediately clear how it is sealed, whether there are nay gaskets or other sealant, or whether air pressure pressing the parts together provides enough of a seal.
We’ve featured a lot of vacuum chambers made for this purpose for many years, and we ‘d be interested to know what air pump is being used here. If you’re curious too and want to construct your own, maybe you could try a refrigerator compressor.