The way I am using my New Vape Glass Bowl is a fine grind right on top of the glass screen and vape and stir as I normally do. It is working out fantastic, when I empty the bowl I just tap it out, and blow through the otherside to clear any stuck ABV. Haven't had to clean it so far (10+ bowls). When I do clean it I will simply use a dry q-tip.
It is true that using the NV Glass Bowl does dirty up the water faster than using a double weave, but pure glass taste and flavor has its attraction for sure. I wash my glass everyday, either way, so this is not an issue for me.
Boro 3.3 has an 80% quartz content...please tell me if I am wrong on this someone.
EDIT:
Non-alkaline-earth borosilicate glass (borosilicate glass 3.3)[edit]
The B2O3 content for borosilicate glass is typically 12–13% and the SiO2 content over 80%. High chemical durability and low thermal expansion (3.3 × 10−6 K−1) – the lowest of all commercial glasses for large-scale technical applications – make this a multitalented glass material. High-grade borosilicate flat glasses are used in a wide variety of industries, mainly for technical applications that require either good thermal resistance, excellent chemical durability, or high light transmission in combination with a pristine surface quality. Other typical applications for different forms of borosilicate glass include glass tubing, glass piping, glass containers, etc. especially for the chemical industry.