how can i get some use outta my dirty grinder

ok so i have a 4pc grinder (sharpstone) that i have had for a couple years and there is a bunch of keef residue in it that isnt easily removed. could i boil it in water and use that to make butter? would hate to see it all go to waste

slowly heat it up and get it soft .. try scraping it out .

then how would you suggest heating it up?
could i use a candle warming plate maybe?

oven . warming plate, candle , maybe a blow dryer set on high heat. try it all see what works .

I have a candle warmer that works great. I clean my grinder once every 6 months.