You are using butane right? Its because and correct me if I am way off but when you push the butane through it goes from a liquid phase to a gaseous phase and picks up cannabinoid particles because of superfluidity principle. It is the deposited on the other side of the screen, with butane and the oil. Then butane will evaporate off, but because the innards of the oil are likely just teaming with butane molecules you need to have them gasify and evaporate before you can get a solid final product. Even if butane is in the oil, a quick lighter ignition will likely burn it all away.

Are you using pure butane, depositing into a pyrex or non reactive dish, are you filtering everything efficiently? All that I can think of....

Peace

EDIT: Another technique I employed was using a razor from an exacto knife, and scraping if back and forth on the dish until it is in one big pile then I attempted caping it all, but it ended up in a small little glass jar that is dipped into occasionally.

Peace

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