Pyrex 8422-100
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Thatās awesome. Thank you!
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Has anyone scaled this up? Iāve got some ideas, Iāll add a sketch here in a sec
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Not crazy scale that would require a sketch, but you could spin 6 - 250ml FEP bottles in GSA or equivalent rotor, pretty reasonably.
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Ooof, $1100 for 1500ml. FEP is nice though
These are what we run for our type 19 rotor:
https://www.beckman.com/supplies/tubes-and-bottles/bottles/334205
About the same cost but the bottles without caps are only like $60/ea so we just swap caps between multiple sets. Not FEP but good for nearly 100k x rcf
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It would be amongst other āballerā status items, no doubt!
*I just bought 4 - 100ml ptfe tubes for $152.20 w/shipping
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In the spirit of the panda washer, have you considered a honey extractor with modified frames?
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I made one of those explode once (for science of course). Turns out hooking a treadmill motor up to the cheapest fleabay honey extractor was a mistake. The experiment told me that they are not suitable for the amount of g needed here
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Fuck yeah, that thing looks like a brick shithouse! I wonder how much the rotor costs though
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I was thinking a custom basket type centrifuge.
A 6x6" column with a cap on one end, attached to a 12x6" column with a cap on the other end, with a sintered disk between the two.
I imagine you could have a 2" ferrule welded into the top of the 12x6 cap, tie a rope to it, and swing it around by hand fast enough to spin most the boof off. So mechanizing such a thing shouldnāt be too crazy.
How much force you guys think it actually takes to achieve the goal here?
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Rough guess would be 3k rcf for 2 hours or 6-8k for 1. Thatās a long time to be swinging a spool around over your head lol
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I was working on a mockup of an idea using sintered discs, this is the same OD as a 1 liter centrifuge bottle from Nalgene(97.7mm). Obviously itās rough, but I think itās similar to what you might be talking about just on a smaller scale? Should be able to do 3-400mL at a time at this size
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Unless I had a really long rope, right?
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I was playing with this one.
https://www.sigmaaldrich.com/technical-documents/articles/biology/g-force-calculator.html
Looks like Iāll need a mile long rope at 60 RPM to hit that 1 hour goal. No problem 
But 3500 RPM with a 2ā radius gets me there and isnāt too crazy, right? Couple kg of boof at both ends of a 4ā pole? What could go wrong
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$100 or so
This showed up in my inbox before you asked 
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Stop reading my mind
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so I used a fabricated stainless cone that has 25um screen, then there is an insert that closes the cone up from both sides and you throw it in a mill at 4500 rpm for 5-10 mins depending on the viscosity. Wanted to work on pairing with c1d1 baldor motor as local fd isnāt gonna approve anything else. I could run about 56 grams at a time
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