I am skeptical of gems causing dust, but it is more likely than with spheres. As to research, Cal himself says he has only tried these experiments himself. That is a sample size of one. This is no criticism of Cal, I think it is great that he points that out. But it is not any indicator of safety. I also think his tests are not convincing of performance of gem cut vs. sphere, but I think he should build the vape he wants to have.
I am sure it is totally safe and will be a fantastic device.
An objective sample size of one is far better than a subjective consensus of a thousand.
(CoughCoughCoughC02coughcough)(CoughcoughCoughCovidcoughcough)
Looking at his website He obviously has true confidence in his product.
As to the performance of gem cut vs spheres, irrelevant of tests he has done, thermodynamics should prove him 100% right.
The designer is clever. Me not so much, so i could be wrong about the following.
Spheres have more thermal mass/volume to surface area than any other possible shape, therefore more heat capacity. BUT.
Cut Gems would loose heat faster, larger
Surface Area to thermal mass/volume, exchanging the heat to the air flow quicker .
Also , there will be smaller gaps between gems, slowing down airflow more improving heat transfere to the air stream.
The small size ,2.5mm would further restrict airflow, increasing heat transfere, but with that
massive array of airflow holes on top , i imagine it is ideal. Proper powerhouse.
As for dust, some people are more sensitive to dust than others, so may want to take the difference between spheres and gems into consideration. And again . Gas Washing Bottles. We
all love 'em.
The volume of dust produced in normal use (NOT shaking it like a maraca) if any would be minute. There should'nt be much friction going on.
Would be simple to do reasonbly accurate tests for internal dust from baller head injectors, even DIY. Worked out how after Grass Yes's post.
Only in instances where you dropped it would any particles be likely. Same as with spheres, just slightly more likely to chip corners.
The internal thread on the body of my qaroma had a chip/shards in it for over a month from dropping it before i noticed. (outside was fine, to my amazement and relief .)
Doesnt stop me using it....did thoroughly clean it,
and the ruby balls though, and remove the small loose glass shards. Next time i drop it ,if it survives , i will check and clean it straight away. It may be worth doing the same for any baller head injector if its dropped, more so with boro' ball if you are using them as they are more delicate.
...... Ball Head Injectors need occasional cleaning with all the ambient dust in the air around us that gets pulled through them with the constant use we give them......
If I was buying titanium, Vapvana Screwball would be on the shortlist.
The name alone makes me want it.