A panda will need tied down. Which has been documented. No you don’t need a donut shaped bag, you don’t even need a bag. I switched to a simple ring of fabric in @Lincoln20XX’s 1kg prototype once upon a time. And emptied with a shop vac. Which was probably another one of those Bad IdeaTM‘s (also documented).
Chances are @Roguelab has gone further down this particular road
We’ve got plans for it, and while those plans do always seem to be a month or two out, I know the minute I get rid of it, I’ll be kicking myself for letting it leave.
I’m happy to make an intro to the manufacturer, or another one that I would recommend over the one who produced this one.
Done with very high quality biomass (but cured). No post processing just this method, -20, very gentle rotovapping and then into a vacuum oven while still somewhat solvent laden.
It eventually sugared up, but I don’t have a picture of it in that state.
So I’m working on a design for a ‘spray wand’ of sorts, for use in this method on a CUP-30 specifically.
i got this idea from someone who didn’t mind sharing or me using it, but the design as stated by this person does not quite work in theory or in practice. looking to get some feedback and to share in the case others want to work one up.
the idea is to improve upon the ethanol distribution of the classic CP spray ball, by taking a length of SS tubing and cutting a slit up the length, so instead of radial EtOH distribution from a point at the center of the spinning biomass bag, we get a ‘blade’ of forceful ethanol, distributing evenly along the interior of the biomass bag top to bottom, with improved ethanol penetration through the interior wall of the biomass bag.
we’ve taken post-extraction biomass samples from the top and bottom of extracted biomass bags and found varying/uneven extraction from top to bottom, so i’m thinking this could help us with that.
though the idea was related as a single long slit, that’s obviously not gonna work as the flow will not come out of this slit evenly–it’ll come out mostly through the bottom end and very little out the top. i confirmed this with a super rough prototype built out of scrap tube i had around.
so, i’ve got a few other ideas i figured I’d run past the community. below are some rough sketches of theoretical arrangments for slits or holes, in the interest of getting even flow from top to bottom, preferably in a ‘blade’ spray.
graduated perforations - this won’t get us the ‘blade’ idea but would better pressurize the wand and hopefully allow even spray from top to bottom. looks somewhat like the ‘nozzle’ style sprayer as pictured towards the beginning of this thread.
graduated slits - a way to get even spray top to bottom, retaining the ‘blade’ spray.
smaller graduated slits - same as 2, smaller slits for higher pressure/higher velocity 'blade.
@cyclopath said you need slots on both sides of the tube to keep the machine balanced. He’s played this game and will probably comment when he isn’t neck deep in projects around the lab.