GroErr Grows...

ttystikk

Well-Known Member
Lol, just my lazy ass always looking to get out of going to the store, im sure a few good marbles would work just as well, juat throwing out some alts
Never a bad idea, but it's good to drill down into what makes a given alternative better; in this case putting the whole mess on top of a running AC unit would heat everything up substantially, not a desirable outcome.
 

GroErr

Well-Known Member
How fast does it spin? Couldnt you just stick a magnet on it and have the misbalanced weight shake the shit out of it?
Yeah that's the idea with the marbles, enough to throw it off balance but not too much weight. It can spin quite fast but then it doesn't shake as much. With the variable control for the motor you can make it "jerk" on each turn which was how I found the best yield. That's where I'm thinking adding some weights to knock it off balance may work a bit better.
 

GroErr

Well-Known Member
I would think a few marbles or big bearings (at least 1/2" dia) would be the best. That would provide needed agitation from inside. You might not get your full 10% but I'm sure it would improve.

Does the small motor work thru a gear reduction? If so, you should be fine.

Finally, I hear of people running these things in a deep freeze, really cold, like -28F. Makes the material brittle and it breaks off more easily, so goes the theory.

Anyway, if you get a cheapie unit working well, I might have to get myself one. :mrgreen:
It's a super simple design but tiny motor, smart design actually. 3rd pic shoes the knob on the outside which is the variable speed controller, 4th pic shows the inside (left) and you can see the motor drives a little wheel with rubber around the outside of it, that turns the drum.

That would be cool, I just keep the material in the freezer right beside the unit (I took the pics on top of the chest freezer) until I go to run it, same reason you mentioned, it does yield better when frozen. Maybe I should try running it inside the freezer - lol
 

GroErr

Well-Known Member
Lol, just my lazy ass always looking to get out of going to the store, im sure a few good marbles would work just as well, juat throwing out some alts
I know, I'm a real pain in the ass like that, lol
Cheers guys, sounds like a few engineers in here, we may figure it out. Now I have to find a cold vibrating dryer or maybe a vibrating freezer? Think I'll try the marbles first - lol
 

redi jedi

Well-Known Member
Cheers JD, glad to share. Not bad for the price, I've seen a similar unit elsewhere costing $450, would have been totally pissed to get that yield at that price, these run ~$100 USD so at least they don't break the bank. Going to have to DIY a design and build a unit that can get closer to the 10% mark for yields at some point. It needs to be agitated more to produce better yields, manually I rub it across the screen with some light pressure to get 8-12% depending on the starting material and it comes out just as clean as running through this unit (trick is not to use too coarse a screen).

As I was typing I just thought of something I'm going to try. If you place a small ball bearing inside the drum, that may agitate it enough to increase production? Have to find the right size/weight, trip to the dollar store coming up. I think they sell marbles in different size there ;) Can't be too heavy or that motor could fry, small-ass motor in them.
Try some bb's...for a bb gun.
 
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