Quetzalcoatl
DEADY GUERRERO/DIRT COBAIN/GEORGE KUSH
Nope, doesn't make sense when talking about the solo.
For a free flowing vape like the LSV or cloud (or dabbing) an 18mm joint should provide more airflow, but with the solo, the bottleneck isn't at the joint, it's inside the solo.
The airflow difference between a 14, & 18mm stem, if any, is negligible.
When talking about the Solo, sure. I was addressing glass in general. I missed the Solo part.