Hi Phil

You made a nice long post on what to be concerned with in servicing a brake system.
It seems the posters brakes work fine just the pedal height was the concern.

It amazing sometimes that little a change in our normal routines can be pick up on and others we allow to be ignored.

You have listed a methodology that covers a lot of territory especially when working alone or with two systems of pressure or vacuum applied to certain points to remove fluids or air.
Pumping the brake pedal, as you point out, has many drawbacks besides having to work both ends at the same time and not make a mess by spilling any.

I personally like the pressurization of the master cylinder top.
I rig up a replacement cap with an air fitting that can be disconnected. The line goes to a regulated air source of about 10+ psi.
The plastic reservoir is only held in by rubber O rings and a long Velcro strip alleviates that worry for me, even though, I have never seen a reservoir loosen up. They seem pretty hard to get off but …?

I have Never liked trying to “pull” fluid from caliper nipples.
First off, is that the caliper nipple is a threaded “in” affair and threads can leak by air.
So you are more likely to get an air mix into making bubbles.
This can make you think you Still have air in the system.
You are looking for only fresh clear fluid in the output hose when operating.

I can imagine that Venturi vacuum device is very noisy but it’s a poor man’s suctioning pump.
I never have used one and have only lost a little hearing.
Protect yourself and use muffs, plugs or something if you think it’s loud, as it really is!

Some high frequencies are somewhat painless but damaging just the same.
I have machined some exotic metals and I’m a believer in a damper’s capabilities and needs.
Titanium “after burner” rings of our jets scream when turned.
Take super sonically applied powered metal application equipment, for instance, it is in an insulated room all by itself. I still wore head gear outside it.

Someone posted a link to how rubber is made for cushions for Brunswick billiard tables.
Very interesting as a knew nothing about it.
BUT,
I looked up another one on how rubber radiator hoses are made. Somewhat complex yet simple.
Seeing India versus Europe or Asia, oh my, what variations of working conditions was showed to me.
Thank goodness we have had regulatory standards established and a likewise management mindset got corrected. All done on the backs of my hard working predecessors.

It showed that the NAFTA trading policy has done nearly squat in some other countries. IMHO.

It made me go clean up my garage even better! (:-)

PHIL