So I mainly use my one hitter to conserve and this thing gets legit clogged with res. So what I used to do was scrape it and re smoke it in the hitter which was cool but it was always harsh and gross tasting. So awhile ago I made a waterfall bong and I decided hey why not scrape and put the res in that. Best Idea ever. I got a bottle full of white milk resin smoke and one rip had me good for atleast 2 hours. If you have not tried res in a waterfall/gravity I HIGHLY "pun intended" recommend it.
Hot knife that shit, or just throw it on a screen in a glass pipe and hold the flame on it, and inhale slowly.