• 4 Posts
  • 102 Comments
Joined 1 year ago
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Cake day: June 14th, 2023

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  • If this was during an auto level, it’s my humble opinion that this is a manufacturer’s defect in the machine that caused the damage. There should be proper coding to ensure that any increase in sensor pressure by (delta p) halt that machine and that there should be a pressure offset in the sensor such that a loss of signal or anomalous zero reading or lack of reading is done prior to levelling to ensure that a sensor failure has not occurred. My XL freaks out if a fan isn’t spinning at the right speed, so they clearly know that a nominal operational check before the print starts is proper engineering design.

    Of course you won’t get anywhere. Unfortunately, a lot of 3D print failures really are user error so I suspect that’s their default response and it takes them a good deal of proof to push them of that mark.







  • Very likely. Lots of super geeks on staff.

    But it’s also possible some astroenthusiast did the math and emailed it to NASA, and whoever got that endo thought it would be cool and passed it to someone who could schedule the instrument. If you think about your geekiest friend and how they’d react if you sent them something truly unique about their geekdom that they could act on - well, that’s pretty much how every engr/scientist at NASA would react.





  • You could say the same for a finite element model. A junior engineer with just 4 years of training can solve, explicitly, the deflection at the center of a slender, simple-simple beam of prismatic section and produce an exact (if slightly incorrect) answer. Building a FEM of the same can solve the problem and take longer (to make the model) with similar accuracy, both of which are good enough for design work.

    Only a fool wouldn’t have a FEM around though, as it can solve problem that would take centuries for a human to solve. They may as well make a cartoon with the child digging a 3” hole in beach sand and then showing a backhoe making a jagged edged hole of the same size.






  • Which is great if I were storing it and only opening the box for a new roll. I expect to open the enclosure multiple times a day when I’m working with it and the moisture would quickly require recharging. Also, since the box will be accessible for two printers sharing the volume (I might be able to isolate them, but it makes the working space more difficult) and there will be two doors it will be impossible to create it at the budget level I’m considering. Management of moisture, in this case, is a more achievable engineering solution than perfect moisture isolation.