You'll never stop yeast sticking to a spindle/tilt/pill.
Even the smooth sides under the surface have yeast build up on them (you can see this when you pull out out)
Good to know. I have feared the diastaticus yeast contamination as I brew a Saison quite regularly, and only have the one fermenter.
I found a nice way of getting a lot of comfort in killing off any contaminating yeast though...
Not entirely sure. I'm fairly laissez-faire about it all. I haven't repitched into the yeast cake in years as I don't brew often enough. But from memory I probably left about a third of the yeast cake for the second back, or maybe about a cup?
Give it a good old shake as it'll need oxygen to...
That sounds close enough. I did a similar thing with mine recently. As Scotty says, it'll never be completely accurate so just use it as a guide for when fermentation is over (slope of graph rather than actual figures).
Over the course of the next few brews, keep a note of the tilt angle at...
Do you use a fresh solution for every bottle? Or transfer from one to another as you empty a second bottle?
I'm thinking of doing the same, but tend to only have one per night and don't know how long different cleaning solutions last