• 1 Post
  • 17 Comments
Joined 1 year ago
cake
Cake day: June 13th, 2023

help-circle
  • The business strategy decisions behind CPU fab is really interesting over the past 15 years.

    AMD made a budget clone of Intel two decades ago. Then Intel made a misstep and released Northwood Pentium 4. AMD used less power and was faster. And AMD decided to go with DDR memory, while Intel went RDRAM. Then AMD was king when they went AMDx86-64 for 64 bit and Intel went Itanium.

    Then AMD made a huge miscalculation on the future of multicore computing and designed Bulldozer, while Intel got their shit together and went down the hyperthreading route and released CORE/Core2/Core2Duo chips. And Intel was king for a decade.

    I don’t know the exact timing, but AMD needed cash and sold their fabs to raise money, which became TSMC GlobalFoundries, sorry. GF learned how to make stuff small since smartphones became a huge market. Then AMD let an engineer run the company and she invested in the Zen architecture, which could be made by GF with their lessons from the mobile world.

    This is my take. By AMD turning GF loose, GF could date other people work on mobile projects, which helped them learn.

    It’s a side note now, but Intel hung on to their fabs and lagged behind GF. AMD let their fab go and benefitted from it. EDIT: I had some facts wrong. It’s possible Intel fabs are ahead of GF.

    As a side note, Intel did try fairly hard to get into mobile like GF. They had the Atom chips and went for tablet, Ultrabook, netbook, and mobile. I had an ASUS Android phone with an Intel SOC. So it’s not like they ignored mobile, but it didn’t benefit them as much as TSMC.



  • My third printer, I paid $70 for, used (ender 3 pro return). It was missing several small components, one big part (top aluminum extrusion) that required some machining with a drill press, and had a bad thermistor.

    I don’t think you can get a beginning printer for $100 unfortunately. Sovol and Anycubic make printers among the cheapest that are more beginner friendly (I think) than Ender, for roughly the same price. I have a friend with a Creality and an Anycubic Vyper, and the Vyper seems to be more beginner-friendly. I have two Crealitys and I love them, but both required a ton of modifications to become reliable.

    Can you check your area for a local maker space? My local library has 3D printers for anyone under 18. Universities typically have a few of different technologies (SLS, SLA, FDM)


  • Kale@lemmy.zipto3DPrinting@lemmy.worldEnder 3 Max Neo Upgrades
    link
    fedilink
    English
    arrow-up
    1
    ·
    11 months ago

    If you have a filament runout sensor, the klipper default settings aren’t great. If the sensor activates, the printer shuts down after about an hour, losing your home position. With a part on the bed, you can’t re-home, so it’s a wasted print.

    The mesh leveling isn’t automatic either. You might want to add either auto-load your default mesh leveling if you always use the same print surface, or put mesh leveling codes in the starting G-code section of your slicer.

    I ran the pressure advance tuning and found that I needed a ton of pressure advance. My prints turned out much better.

    I also got improvements by reducing the allowable deviation in the slicer (G-code files get much bigger, though), and I load files as STEP files directly in Prusaslicer. STL doesn’t have curves, it’s a series of planes. STEP files have geometric primitives and can have curves.






  • The one thing I didn’t like about klipper firmware on my CR-10 was the default filament runout setup. One of my first big prints (with expensive ApolloX filament) ran out. The default klipper setup waits something like an hour, with the hot end still hot, then completely shuts down.

    So my home position was lost, and with a partial part on the plate, there was no way of re-homing, so it was a wasted part.

    Make sure your filament runout timeout is set to 24 hours (and I think I might have made the temp lower so it didn’t burn?)

    I like klipper on mine, too. I do wish the default mesh would be loaded at startup, but it doesn’t load any mesh. Which doesn’t really matter, I guess. I have four build plates, three different styles, so I’m running bed levelling pretty much every print anyways.



  • Second this. If it’s PLA, improving layer cooling might help stiffen the last layer before the next is applied. If it’s not PLA, slowing the print down can reduce the horizontal forces for slower-cooling filaments like PETG/ABS. If there’s any warping or over extrusion leaving little blobs on the surface, your nozzle can bump into them, breaking cantilevered features like this one, or breaking the part off the build plate. Getting retraction to blob less or making sure no over-extrusion exists could help. If it’s PETG or Nylon, printing slightly wet (where the surface doesn’t look bad) can cause blobs on the top layer that the nozzle hits and causes those horizonal forces.

    Drooping like this means something is too soft (speed up cooling on PLA, reduce print speed to give more cooling time and better layer adhesion for any material)

    Prints like this aren’t impossible. I’ve printed a PETG storm drain that had vertical slots like this when I couldn’t buy one I needed. It turned out great but I had to print really slow.


  • I was trying to finish research and upgrade a few weapons and visited a few frozen lifeless rocks in a row. It was starting to get repetitive, so I decided to pick a random level 70 system at the limit of my jump range. One planet had a lot of life so I landed. There were a few of these level 10 giant beetles the size of an elephant with lizard skin (their muscles rippled when they moved, they were animated really well). I shot one to see what resources they dropped. Like a movie, an entire line of those things popped over a ridge and charged me. Level 45 to 70.

    It was a tough fight. Exploring is rewarding, and focusing on planets and moons that have life show off more of the awesomeness of this game.