Researchers embed digital 'fingerprints' into 3D printed parts — tech may make future ghost guns more traceable
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Here’s the paper where they explain it. Basically, they make subtle fluctuations in layer height, adding or subtracting small amounts that are not visible to the naked eye, to encode 0s and 1s. So, maybe in principle this could run at the firmware level on your printer. Then, someone can use a microscope to read off the code from pieces of the printed part.
I would have some doubts about how reliable this is, given the relatively large tolerances in fdm printing, but they have a section about that in the paper, so I guess they at least have thought about it.
made this functional part to fix a broken latch
made this functional part to fix a broken latch - Lemmy.World
The plastic part inside this latch broke, and I wanted to print a replacement. I was genuinely surprised at how straightforward it was!! This is my first draft: it fit and worked fine! I made a second version with a few cutaways around the corners, and that was the final draft. (I forgot to take a picture of that one.) There are lots of awkward overhangs, and I was having a hard time figuring out how it could be printed (a) in a good orientation for the stresses and (b) without supports. Then I remembered: we can just use supports!! I usually try to design so that they aren’t needed, so I almost never use them. But wow they made this easy.
Getting into Arkham in 2025: A FOMO-free Buying Guide - Ancient Evils
Getting into Arkham in 2025: A FOMO-free Buying Guide - Ancient Evils - Lemmy.World
For anyone interested in checking this game out, but daunted by the very large card pool, this article is pretty good. The goal is to give people suggestions without triggering FOMO over stuff that’s out of print or way too expensive. I think it does a good job. Maybe too good: there is still a big wall of text. The core recommendations, which are accompanied by a lot of additional explanation and alternatives, are the following. 1. There is not a single [expansion] for this game that you NEED to enjoy what is available. Even if you never lay your hands on [some particular expansions], you will still be able to have a great experience. Your cardpool will be excellent and you will be able to play great campaigns. 1. You do need a Revised Core Set; the box labeled FFGAHC60, from 2021. That box has everything you need to play the game and see if it’s for you. Many of the cards in that box are still regularly used by experienced players—the core set is very good. 1. First investigator expansions: Edge of the Earth or Drowned City, or [other discussion]. 1. First campaign expansions: Drowned City or Innsmouth Conspiracy, or [other discussion]. 1. Is this game for you!? This is a good question, and there is some discussion of it at the end of the article.
Simple displays to make ornaments of some painted minis
Simple displays to make ornaments of some painted minis - Lemmy.World
We wanted to turn these painted minis into tree ornaments, and this is what we came up with. I used magnets! [https://lemmy.world/pictrs/image/7a6ac7d2-76f3-486b-afca-988a90f50660.jpeg] I’m also really happy about figuring out the print orientation: it prints with the flat front down, so the arch comes out great without supports. Here’s a printables model page [https://www.printables.com/model/1073539-hanging-display-ornament] for it.
Oh, maybe the instructions on the cosmic-epoch repo will work? Clearly the readme hasn’t been updated, since it still says pre-alpha at the top, so I hope the installation instructions haven’t changed.
How to try cosmic alpha without installing the iso?
How to try cosmic alpha without installing the iso? - Lemmy.World
I’ve been waiting until the alpha release to try cosmic, so I haven’t paid much attention to instructions for installing it alongside my current pop os 22.04. Now that the alpha is out, I see all instructions pointing to download and install the 24.04 alpha iso. But, that’s a big hassle! Is there a way I can try the cosmic alpha along side my current install?
gaming distro recommendation
gaming distro recommendation - Lemmy.World
My teenage son wants to try a new distro for gaming. Our family has been using pop os for years, but he wants to try something new. The main three I see are - nobara (fedora based) - garuda (arch based) - drauger (ubuntu based) The machine he’s using is a 2018 Intel nuc. It has a strong processor (core i7) but no discrete graphics. I can’t tell which (if any) of the distros above would be better or worse for his case. Reading around, it seems like Garuda might be slightly more fiddly. And, Drauger I only saw mentioned in a couple of articles, but not on this forum. Are these impressions correct? Do you have any other advice for us?!
how can I remove some entries from the "recent" list
how can I remove some entries from the "recent" list - Lemmy.world
I press Super and type “recent <filename>” to open some documents. But after reorganizing where some of them are stored, I now see entries for both the new and old locations. Currently the old ones are at the top of the list, because I’ve used them more often. Choosing those entries doesn’t do anything, because the paths don’t point to those files anymore. How can I remove the old entries from the list?