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As the yeast consume the sugar, they convert it into alcohol (you could view it like this - they eat sugar water, and piss alcohol and fart CO2). One reason the yeast stop reproducing (and the colony dies) is the alcohol content gets too high and it becomes toxic. Thus, you could not add more yeast - there is a reason they stopped reproducing. ;)
Has anyone figured out a good way to safely thin PVC cement? I can't tell you how many cans of this stuff I have had to throw out because, invariably over time, the cement thickens into a useless gel substance. I was wondering about diluting it with acetone. Would that make it unsafe to use? The primer seems to last years, but the cement only lasts several months to a year.
If you were trying to glue two pieces together end to end, that will never work. You need a properly sized coupler fitting to do so.
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