Howdy,
Through my experience I've come across two myths that I am greatful for learning and would like to share with those who may not know already;
1. I was told you needed to wait an hour between journeys, this is incorrect. I have sometimes waited less than 10 minutes after and no tolerance has been built contrary to what I was always told.
2. When drilling a hole in a glass bottle for your machine the diamond dust drill bit works a lot better than the standard diamond drill bit suggested, I've used it at high speeds with water and gotten quick results. I've drilled through thick glass bottles in under a minute.
Hope that info can help others.
~FluffyCl0wn