How To Use Progressive Web App aka PWA On 420 Magazine Forum
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The VM3 has adjustable temp, but it's fat and clunky compared to the iolite and the hits are small due to the tiny bowl. Battery life/replacement cost is a concern too. $450 is a lot of $ for the advantages it provides. I'd rather have an iolite and a Magic Flight Launch Box. You'd have enough $ left over to buy a nice whip unit.
Make sure the unit is completely bled because sometimes air gets trapped inside and if ur filling it with butane on top of air it will always throw it off in the heating process so bleed it every time before u refill with butane