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Gargamel

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    Spacecraft Engineer
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    Manning the turm

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  1. Mathew Lillard’s Shaggy was better than Heath Ledger’s Joker.
  2. Well, my robot warned me it had detected a singularity tonight. Yes, I panicked for a second.
  3. Thought I had the other day
  4. I'm coming back from sabbatical... I didn't want to overstate things.
  5. I can agree wholeheartedly. They may be CWIP's (Completely Worthless Internet Points), but they're my CWIP's.
  6. There was an update earlier, and it has been noted that things are currently somewhat borked.
  7. Not unless we change the software settings, which we really don't have any plans to do so, since the dot's really don't mean anything in the grand scale of things.
  8. Ahhh The devil is in the details as they say. No, you're not going to print a carbon fiber tube. What you are going to print is with a carbon fiber infused filament. IIRC these materials have shown increased strength along all axes, even between layers, as some of the fiber does tend to span layers somewhat. If you need a CF tube or spar or sheet, you're better off just buying said material from a place like McMaster-Carr and cutting it to your need. But if you have a custom shape that needs to be in CF.... well.... they make CF molding kits, you just have to provide the mold..... which 3d printing excels at. Make a mold of the item you want in CF, print it in PLA, finish the mold to perfection, and then mold the CF to that mold. Boom. And that's repeatable, relatively cheap, and fast compared to what you'd get from FDM printing. You shouldn't treat 3d printing as the end-all of home manufacturing, but merely a cog in the bigger picture. Yeah, for the average person, a FDM 3d printer will cover 98% of their needs, but if you're looking to move into a finished commercial product, you might have to consider other methods used along with a 3d printer to make your product repeatable, consistent and of a high enough quality while keeping costs down. There are many many many different materials available for 3d printing, each with their own properties. You Tuber CNC Kitchen did some really good research into the various properties of common printing materials, doing actual practical experiments to compare them. 3D Printing Nerd has a really good episode where he walks through all the "common" 3d printing filaments (Common as in you probably don't need specialized purchase orders to obtain them, but some might be harder to find) and their advertised properties. If you're looking at really high temp, or even moderately high, SLA 3d printers (where the object is printed using a liquid resin rather than melted filament) might be what you should be investigating. They are cheap enough now that they are comparable to FDM printers, but the resins do tend to run somewhat expensive. YouTuber Integza (who is an absolute genius nutcase, he makes Colin Furze look like an OSHA safety officer) has been working on making pulse jet and turbo jet engines from 3d printed ceramics, all done with desktop printers and not much of a budget. I'd recommend looking at those channels, plus other resources, before deciding on anything.
  9. It’s glass transition point is 50-60c though. That’s where it gets soft and can deform, by not melt. So no, PLA is really not suitable for any temperature you couldn’t tolerate yourself.
  10. There were only 3 originally. Actually I think there was only one way back, but the game entered alpha with 3 IIRC. Val was added at a later date.
  11. Easily. This type of application is what they excel at, no stress along any single axis. Sure, as long as the item is printed in the correct orientation. In an FDM (as opposed to SLA) printer, the layers of plastic are the usual weak point, as they tend to fail in delamination before they reach the plastic point. As long as the stresses are oriented so they aren't pulling the clip apart, then a clip should work fine. Yes, with the right design, material, and manufacturing considerations, 3d printed items can survive just fine. IIRC ABS is better for higher temps, there are plenty of other materials that are designed for higher temps.
  12. Well luckily enough, we do have some analogous test beds here on earth we can use. Drop the proposed probe onto one of glaciers of Antarctica, have it delve down a bit, make a right turn at Albuquerque, and head over 40km or so through the glacier and have it surface somewhere else. That way we can recover the hazardous material and handle it properly, and the shifting ice should simulate conditions they'll encounter heading down. At the very least it'll give them a test bed to work the problem. And anything lost to the glacier can be recovered in a few centuries/millennia when it gets spit out the other end :). With heavy lift capacity coming back into practical consideration, a conventional drilling rig might also be feasible. It'll require a number of automated resupply missions to bring more drilling pipe to the rig.
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