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  1. jlabrasca

    3D Printing What Are You Printing Today?

    >smile< Its actually designed to be an adhesive fit. I put a drop of thick CA in the hole, If the nut was made to tighter tolerances it would have/should have fallen into the hole. The sides of the nut had a slight draft, and so I needed to persuade it a little. Plus which I wanted to get...
  2. jlabrasca

    3D Printing What Are You Printing Today?

    Yeah. Estate sale a couple of years ago.
  3. jlabrasca

    3D Printing Desiccating Filament under Vacuum

    Yeah, I thought about that.
  4. jlabrasca

    What I did today -instead- of Rocketry.

    Tried to remember how I kept my glasses from fogging up when my job required a face cover.
  5. jlabrasca

    What I did today -instead- of Rocketry.

    https://www.wind-it-up.com -- they have been kitting and reissuing the Peck Polymers models. The box I might get to when working-from-home stops kicking my ass. I got the Zero (just visible near the bottom of the pile) from an eBay seller about a year before the reissue came out. It was...
  6. jlabrasca

    3D Printing What Are You Printing Today?

    I got a little stringing, but for this print I am going to pretend it was deliberate. About 12 hours to go on the base.
  7. jlabrasca

    What I did today -instead- of Rocketry.

    Today I continue revising lab assignments to turn them into lab-like work-at-home assignments. Fortunately my classes this term are all general education. If I was teaching majors physics, or engineering mechanics, or circuits, or materials science ... the sh!t would be over my head, instead...
  8. jlabrasca

    3D Printing Desiccating Filament under Vacuum

    10.5 liters -- 3 gallons, more or less.
  9. jlabrasca

    Is this a bad omen?

    https://www.popsci.com/gas-leaks-are-designed-to-attract-turkey-vultures/
  10. jlabrasca

    What I did today -instead- of Rocketry.

    Are you saying that the administration at an institution of higher learning is not a strict and disinterested meritocracy? I am shocked... SHOCKED, I say.
  11. jlabrasca

    3D Printing Desiccating Filament under Vacuum

    Finally getting back to this. Repeated the attempt with two rolls of filament, and the hot plate turned up to "medium" (about 72°C by the pyrometer). Its cooking the water out, but the vapor is condensing on the colder upper parts of the chamber. It is dripping from the fittings in the lid...
  12. jlabrasca

    Closing Campuses

    . To be sure I I know some lazy instructors. And I've known some cyclical burnouts, coasting towards retirement. I know a lot more instructors who are honestly doing the best they can with limited resources and too little time. And the job can get to be pretty miserable. Dealing with...
  13. jlabrasca

    Closing Campuses

    More work for the online classes is the nature for online classes. Lectures, labs, and recitations are all much higher bandwidth than anything we can do through a screen. Making up the difference is a lot of work for both the instructor and the student. As for you suspicions about your...
  14. jlabrasca

    Closing Campuses

    Except of course that our online and hybrid students were self-selected. They were comfortable with the idea (if not competent in the execution) of an online class. And the DFW rate has always been higher for hybrid and fully online than for entirely face-to-face classes. Disproportionately...
  15. jlabrasca

    What I did today -instead- of Rocketry.

    Think you went me the wrong link. That show appears to be about mentally ill people who accumulate things that they do not need. >smile< I am pretty sure my tool cart is in the background of some of the build pictures I've posted. I long ago crossed the line between populating a useful tool...
  16. jlabrasca

    What I did today -instead- of Rocketry.

    >smile< quite correct. I am migrating from a 6 core cheese-grater Mac Pro to a 12 Core cylinder Mac Pro ... but I come by my antiquated affectations honestly. See if you can spot the ADB keyboard. Hidden behind the table, just about in line with the trashcan, are two Desktop Beige G3s. One...
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