Stainless Steel Rotovap? /OpenSource Idea?

I can tell you this wasn’t lol

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Diaphragm gauges homie!

image

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Are you guys trying to invent a Kuglerohr Device?
https://www.buchi.com/us-en/products/laboratory-evaporation/glass-oven-b-585-kugelrohr

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Nope. The original goal of this post is to make it so that a stainless steel splatter platter or something of the sort can be made to spin horizontally and used as a bf rather than a glass flask.

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I sure wish I had the cash for 1!!! That looks sweet!

Thank You @Soxhlet / Indofab Solutions for giving my columns jackets. , :octopus:

I do not extract indoors and I only use high pressure clamps for butane extractions. The mixed clamps is for the picture only not for actual use.

Thank you for also keeping @Killa12345 's store name on there as it was originally purchased from killa as a sleeved column. I think it’s so fucking sexy thank you.

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Is this a viable solvent recovery design?

So I’ve got a buchi r-110 rotovap head that will sit on a ring stand. Any good ideas how to pull off the rotating coupling? Got the head for $30 on ebay then realized the vapor duct is 5x as much without the condensers lol

Best bet is to find one of the rotary couplings on ebay with no glass. They come up for cheap pretty often because people break the glassware and the glass gets sold as part-out. Also a lot of time industrial salvage companies doing take outs don’t realize the glass is expensive and they’ll just sell the rotary couplings. Would not recommend trying to DIY one, totally not worth it

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Electric stir bars? Why don’t we use these for spd?

US $527.80 20%OFF | Laboratory mixing reflux distillation unit 250ml/500ml/1000ml/2000ml
https://a.aliexpress.com/_mKkr1UO

I mean just the motor and stir bar

What sort of vac do you imagine that seal will hold?!?

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That one? 150k microns if you’re lucky.

We’ve drawn up some in-house designs for things trying to do the same job, and one just came back from the fabricator yesterday. When I get a chance to put a vac gauge on it I’ll let yall know how well it works.

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That was my point…

@GroovyOctopusLabs: It’s not that the idea is horrible, just that implementation is non-trivial. It greater the required pressure differential, the harder the task becomes (presumably, not a problem I’ve looked at hard).

…and this implementation doesn’t look like they tried very hard…so the probability of reaching cannabinoid distillation vacuum levels are essentially zero (over sizing your vacuum pump by an order of magnitude might work)

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Mag drive!!

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Are they trying to copy this rotary seal design from a (dirty) reactor?



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You’d need a badass magnet as when they get hot they loose magnetism

Salem labs wiped film use magnetic couplings and when the magnets get hot you can’t get the basket over 150 rpm without it slipping

I’m sure you can do it you just need it done right, and there wipers are made in China so I know it can be done better

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Magnetic sealed bearings are rated for full vacuum as they are sealed and isolated so there’s no chance of any vacuum leak. They are very expensive 2-3k and can hold for a moderate amount of torque.
There’s other friction bearings that are cheaper and hold good vacuum. Not quite enough for short path though

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I wish I knew where to find a motor and stir bar like that for stupid cheap

Have you never heard of an overhead stirrer?

Missing why this is a novel concept to you.

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