Dude - Look up a halen honey hole, I promise - there ain't a better quartz nail around. There sold at the following:
Carbon, in all organic matter, safe.You are right, he questions the safety of TiO2 (titanium dioxide), I personally have not studied the subject and will be the first time I find out two safe elements coming together becoming dangerous, on the other hand, two unsafe chemicals can become safe for consumption when mix together, like table salt for example.
I am a boro man myself. They can glow, but you have to get them crazy hot.I love quartz and boro. The way you can tell the difference is if she don't glow she's boro! lol, seriously all boro is is pyrex. @darkrom I've had a bunch of quartz domeless nails, love em - one place I used to buy em from would break all the time. The ones I get from a different lhs are like fucking tanks but the tend to lose their color and start to oxidize after a while.
Now the Honey holes are fucking sick. Not only is the intake (hole) huge (gigitty) but their like 5 millimeters thick.
Now I forgot to mention the SCS - not only are they fucking awesome but they don't lose color as much as other either. I know they also are releasing a Dab Essential head for the Omni Nail. Could be big boys...