• 1 Post
  • 61 Comments
Joined 3 years ago
cake
Cake day: August 4th, 2023

help-circle
  • You don’t explain much what’s going on or what you’re trying to get it to do instead, but let me take a wild guess and you can tell me if what I’m saying is correct:

    • You’re trying to print two separate items.
    • The first layer of each of the items in question happens to be a rectangle roughly half as big as what appears to be a single rectangle in the picture provided.
    • But you had the two items separated by a small amount in the CAD software and/or slicer.
    • You’re wanting it to print two separate items with enough margin in between that they don’t merge into one single inseperable item.
    • But somehow it’s fusing them.

    Is that roughly correct?

    If so, my first guess as to what might have caused that is “first layer expansion”. Your nozzle is too close to the bed, making the width of the bead it lays down on the bed spread out a bit more than it should, resulting in a wider bead than you’re trying to make. And the amount of space you left between the two items is small enough that the first layer expansion is pretty much entirely swallowing up that margin. To fix, increase your z-offset a bit. If the first layer expansion isn’t an issue otherwise, you could also “work around” the issue just by separating the items by a greater amount in your CAD and/or slicer software.

    If more than just the first few layers remain fused (like, if the parts hypothetically had straight vertical sides and every layer fused all the way up, rather than just being fused on the first 1-to-6-ish layers), then it’s probably something else. Maybe overextrusion?

    And, again, both of those theories are contingent on whether I’m even interpreting the question you’re asking correctly.





  • This comment is more about FOSS than about 3D printing, but if you’re interested in GPL violations, you should know about the court case SFC v. Vizio. If it goes the way the SFC is pushing (and the courts have made a surprising amount of noises suggesting they’re broadly sympathetic to SFC’s arguments), ordinary end users will have a lot more leverage to push companies to honor the terms of the GPL and provide source code as required by the GPL. Every manufacturer of smart TVs, smartphones, game consoles – hell even robot vacuum cleaners, cars, and sex toys – if they include GPL’d code in those TVs, they’re required to provide source code to users on demand. As it is now, companies can (and do) flagrantly violate the “source code provision” requirement in the GPL. But this case could change that.



  • Is there consensus on who would be best to migrate your “things” to? Maybe what do folks think of Printables?

    I do more publishing than downloading. And I’m interested in one that’s in the spirit of FOSS. Friendly to permissive licenses. (Unfriendly to more proprietary licenses is a big plus IMO. I’m a fan of attribution and copyleft requirements. Noncommercial limitations, I’m relatively indifferent to.) Not enshittified and not likely to enshittify any time soon.













  • Not exactly the densest material out there, but pennies are cheap and easily procured. May not be quite what you’re looking for for your use case. (You asked about “cost/weight ratio” and “weight to space” which makes it sound like you’re looking to add a lot of weight.)

    I’ve been known to make a fully-enclosed cylindrical cavity and set my slicer to pause at exactly the right layer to where I can drop a few stacks of pennies into the print before upper layers seal the cavity closed.