Using a paper filter vs a glass or ceramic filter for cannabis products is night and day. Though paper filter may be economic and convenient, a glass or ceramic filter will give you a more clean, purified smoke. Resins will attach themselves to the paper filter and could cause the filter to become soggy and moist, where in a glass or ceramic filter the flow is more efficient. If you don’t have a glass filter, we would say to still use a paper filter to optimize your smoke.