Daub Marley
Member
They'd have to right? Parts break, so they must be willing to offer replacements, but is is it going to fit perfectly with the piece that you had custom made?
Turnkey WFE Still Units
- Thread starter powerbong2000
- Start date
icmagaccount
New member
The majority of the companies(the only ones to have responded so far) have said they cannot sell me the wiper blades or make custom lenghts for the blades like I would need. We looked into having a local machine shop make us a cage for ptfe blades we could have made to specs however we have opted to avoid the wiping system completely as our scientific glass blower thinks he can create a thin film without moving parts. Excited to see it all come together.
Pharmer Joe is using a CAT Scientific drive motor to turn a stir paddle in the heated feed flask of his molecular still.
CAT Scientific's turbojet drone engine division's proto shop also built his propriety thin film creating assembly. Besides military drone engines, they are the folks who make the strap on twin turbojet delta wings, for jumping out of airplanes and flying like jetman.
I can attest that they do extremely nice work and are a pleasure to work with. They can also follow up in production quantities.
I'm still working on borrowing a "ride" from them to try out.........
powerbong2000
Member
CAT TURBOJET THIN FILM!? Are you f*cking kidding me!? whattttt!?
powerbong2000
Member
Gonna have to dig out some of my RC jet parts and take a look. LOL
He's probably thinking of a falling film type of still. This was one of the first developments for molecular stills using gravity to pull the film down a heated surface.
It will work but you have no control over the residence time and the film thickness will be relatively thick. The wipers in a wiped film unit do several things. In addition to spreading the film as thin as possible they introduce a lot of turbulence to the film so a fresh layer of distilland gets pushed to the surface constantly. Many stills also have a grooved wiper so the wipers push the film down. Residence time is controlled this way.
Another issue with falling film is the distribution of the film at the top and designing the surface so it doesn't gather or form rivulets.
RB
icmagaccount
New member
I'm going to wait to say any more but we think we solved the thin film problem as well as controlling the residence time however this is all theory for now. I was thinking we would have issues with too short of residence time at the temps we are reaching, I was under the impression the wiper blades slowed the flow downward?
PeopleWish
Active member
We love our 2" still 
- we can squeeze 98% of cannabinoids our of our residue - it just takes a few passes -
- we can squeeze 98% of cannabinoids our of our residue - it just takes a few passes -
No turbo jet parts involved, just the high quality prototype shop that also builds turbojet engines.
One thang ah did larn in the olden days before professional retirement, was that iff'n ah wanted quality parts, and was not in a position to gamble on project schedule, I was more successful commissioning the folks who routinely make precision parts to extreme standards.
They of course are not a hobby shop, or interested on one offs, and are geared to make pre production prototypes in support of their manufacturing capabilities.
Daub Marley
Member
Yeah my brother worked in a machine shop and they used to machine parts for the aviation industry and they eventually refused to accept their orders because (even though they paid great) they would not accept 75% of the order due to variances that are slightly out of their tolerances. Like half a human hair off. The aviation industry in general doesn't mess around, and they have some of the highest quality parts, best mechanics, and organization money can buy.
The aerospace industry was one of the leaders in geometric tolerancing, ISO 9000 and Six Sigma quality, because the more components you have, the greater the odds something can go wrong.
I started in the industry as a visual dimensional inspector, while going to school nights to become an engineer on their nickle. I eventually worked as a VD (hee, hee), fluorescent penetrant, magnetic particle, and radiographic technician, before becoming an engineer, so know a bunch of ways and reasons to reject parts.
Part of the cost of a aerospace part, is how many ways and times its inspected by certified personnel, plus all the record keeping. The sort of thing you do when the cost of one single failure, is extreme.
Of course you can't inspect quality into a part, so the rest of the cost is making a quality part in the first place, thus ISO 9000, and Six Sigma.
Daub Marley
Member
Yes sir. Agreed on all accounts!
This actually seems like a pretty interesting job. I bet the manufacturers hated you.
Yes sir. Agreed on all accounts!
This actually seems like a pretty interesting job. I bet the manufacturers hated you.
I was an interesting job and you can sometimes tell more by a persons detractors, than from their friends.
I like to think that I pissed off all the right people and that some airplanes didn't crash because I rejected defective parts.
Foremen that couldn't manage their resources to produce consistently quality parts, didn't last very long, so I didn't really start racking up enemies until I started managing departments, and building new facilities.
