How to make CBD/THC vape pen refills?

@ItsintheGenetics Hey bud what liquidizer have you used? I was thinking it was better to go live Rosin straight into an E Rig. My thoughts are it will be higher quality concentrate no need for additional additives? The only benefit of a pen would be you would have a cartridge but those are basically plastic disposable trash that would be no longer needed ? I see pens on their way out in favor of e rigs for Rosin or wax straight. It would seem to me that all this work in additional additives is unnecessary ? Just wanted to get your take on it and if you tried an E rig ? The batteries could be up to four times more powerful than a pen battery aswell. Am I wrong or did E Riggs completely replace the unnecessary cartridge? Cheers !!!