My friend does'nt have access to a freezer currently so he has to evap the naptha. He noticed last time their were dust particles in his crystals. I know it's no big deal, a little dust never hurt no one. He's kinda a perfectionist though.

So any suggestions or tips would be greatly appreciated

Also, last time I traveled, it was way more colorful than the 1st 4 times and my stereo turned into a being and I was communicating with it! But I still knew I was just trippin... Could this have been a minor breakthrough? The last 2 times I've done it now I just completely let myself go and they have been very happy/enlightening experiences. As opposed to the first 2 times where I had a slight fear for the first minuite or so.

Recrystallize your product. There's info in the wiki on how to do it.

Don't worry about definitions, keep exploring.

All he has to work with is a crockpot prettymuch. He'd love to recrystalize if he could. The product is very clean cept 4 the dust.