I have had my own home made vacuum system for a long time. It really helps flowing a lot of fluid; so much so you almost need some one to stay on the reservoir.
As with anything the details are what make it work. Here are 2 points.
1. I put thread sealant on the bleed screws which helps keep the bleeder form pulling air around the threads.
2. I open and close bleeder using ignition pliers from Seers. Always seems to work better then a wrench.
Also, it flows enough fluid I have put in several master in dry.
Second photo does not show pump attached but it is always attached and running when I bleed. The set up is also good for sucking out fluid from things like the master cyl, power steering pumps, lawn mower oil, etc.
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