I purchased the pollen tumbler about two weeks ago now and have put a little over a pound of larf through it and have harvested almost a mason jar full of kief! It will process product way faster than any alternative method I have used. It is so simple to load and use. Just turn it on and walk away.
This machine works nice. Load it up, turn it on, come back in a few hours and all the work is done. No mess.
First time ever using a machine for dry sifting. The 150 seemed the right price range for me. I have only used it once, with about 1-2 ounces of trim, got about a gram out of it. So I know it works. Very quiet machine. Simple use. Can't wait till my next harvest, so I can even put more in it.
It works well. Good for personal use. I tumble for 10 min. Really tasty