Well at least we have someone here who deals with moisture.
I agree that airflow facilitates evaporation. However the interior of a case does not provide airflow. Whether it's a case with loose tubes like the old Justis cases or the new ones with the fabric interiors there is nothing to force airflow throughout the case such as you do with the blowing fans.
As I said though I don't think that any us can really KNOW what effect certain humidity levels do to pool cues. We just can't without some serious testing on the subject with lots of samples and taking into account the variables in cue and case construction.
No one is going to undertake this test. We all have anecdotal evidence that shows us that cue construction is the biggest factor and not case construction as pertains to protection from moisture. All of us have stories of cues kept in x-brand case for a hundred years that is still dead straight while we can point to other stories of cues kept in x-brand that warped in a few days. I mean we all have our stories.
When I owned Instroke I often traded for cues. So I often had anywhere from $15k on the low end to around $50K on the high end of cues traveling with me all over Europe and the world. One of my friends who deals in mid range to high end cues travels with around one hundred cues to shows all around the country.
I think that it's really fair to say that we just don't know what's best despite what we think it is.
It's not a question of whether I am right or Mr. Justis is right on the protection against excess moisture aspect. It's really that both of us and just about every cue case maker doesn't really know what the answer is.
How do you adequately protect against something with so many variables to it? You can't.
I don't have a way to influence what the cue maker does and how well they season their wood and choose their glues and what tolerances that they use in their construction.
I choose to use fabric that doesn't absorb very much moisture. I chose this over felt because felt does trap moisture. I know this only because of primitive experiments I have done using a glass of water, sunlight, and fabric pieces. In the past 18 years I have, as had Mr. Justis, plenty of folks who have testified that they have used their Instroke cases without any problems whatsoever. So I think that the fact that you have two casemakers who make the same style of case but have opposing views on how the interior should be built has already been a perfect natural experiment. The data, in the form of no plethora of reports one way or the other suggests that neither method of interior construction is particularly better or worse than the other.
I have read that this is considered good practice among musicians. And perhaps it's good practice for pool players as well. Bob Runde has certainly drawn parallels to instrument making in his cue making. It is perhaps no coincidence that his old Schon cues are one of the brands known for their ability to withstand climate change and stay straight.
That could be. My point is that none of us really knows this as pertains to pool cues. Again with the anecdotes all of us know the hustler who walks in from the freezing cold with his thin black plastic case and screws together his cue and immediately starts running racks.
The key words here are "maybe" and "potential" and "if". Meaning that we just don't know.
Let's say you walk outside from a dry room into fog. You open your case, pull out your cue and stand there for a few minutes and then go back inside. You dry off the cue as it has dew drops on it from the fog and then ask yourself what is the state of this cue internally now as opposed to BEFORE I went outside?
Answer: You don't know without being able to test it and futhermore you don't know if it really matters or not. I for one don't believe that such exposure does anything negative to the cue. I think that a pool cue needs to be exposed to persistent forces of expansion and contraction to affect it adversely. Such as car trunks which reach very high temperatures when standing in the sun.
I am willing to supply cases made with the interiors I typically build as well as one with the same interior construction as that which Mr. Justis builds. I will also supply interiors made with the Multi-tube method. You have to tell us how you will do the testing and in what time frame. I will pay you for your time with a case that uses the interior of your choosing.