Case Improvements and the keymat

Discussion in 'Pyra News' started by EvilDragon, Apr 4, 2019.

  1. Grench

    Grench Forum Addict!

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    The right nub is the injection point. The mold is filled from there. That is where the density and temperature, pressure, and flow differences will be most pronounced?

    @EvilDragon I would like to see a picture of the black case you mentioned even if/though it is ugly. It could give us an idea of how bad is bad? It may very well be impossible to fully remove this effect. Maybe it would be more pallatable to have those patterns appear in a primary color instead of black? Gradations of black tend to clash with each other. Gradations of red (or other color), for example, can be quite complimentary.

    I suspect that the lid with it's central fill point has an awesome sunburst pattern. Maybe this is something natural to be embraced instead of overcome? Hard to know or speculate on how a depth-less solid color would look from the blue jelly case picture where we see depth and internal textures.
     
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  2. JDTAY

    JDTAY Half Pepperoni, All Cheese

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    I don't understand any of the case stuff, personally. I am on quite a few prescription drugs though.

    My plan was always to let ED handle the hardware and just try my hand at software. Otherwise, I'd be rocking an RPi in an Altoids tin by now.
     
  3. rygD

    rygD Nihilistic Mystic

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    I know, isn't it beautiful? Just add some sparkle and I bet it would pop. Not sure how it would look without transparent colors, so maybe we should be looking at opaque black or brown or beige to see the worst it can be.
    --- Double Post Merged, Apr 7, 2019, Original Post Date: Apr 7, 2019 ---
    I agree. Show us the black case, maybe try red/dark red to see if it is as bad, and possibly just embrace it if it can't be solved quickly/easily/cheaply.
     
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  4. pmprog

    pmprog Advanced Member

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    Put it this way... If your first few batches of cases have this "marble" effect, people here and ready to buy will take them, and that'll give you time to look into the "clean" cases...

    It's the same with your heat pipes. Imo, you need to start getting some units out with what you've got, batch 2 can have some improvements, and hopefully by then the software will have seen more developers and things will be coming together
     
  5. crazyhorse

    crazyhorse Very Active Member

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    I wonder if the previous case company somehow sabotaged the moulds in retaliation for you moving the moulds.Or they knew the moulds were faulty and thats why they never produced any cases (only the transparent ones)
     
  6. EvilDragon

    EvilDragon Administrator Staff Member

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    No, these issues was also one of the main reasons I moved, as their cases always looked that bad and they couldn't fix it.
     
  7. sm0kew0n

    sm0kew0n Very Active Member

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    Isn't there an argument to made here that they don't look that bad (at least from the example you have shown) and that the time and effort required to 'fix' them would be unnecessary if enough of the pre-orderers accept the flaws as an enhancement?

    Also, it was mentioned in another case thread that the changing of colours during manufacturing would produce unique parts that would be of interest to current orderers and that the backlight glowing through translucent parts was not a issue for some.

    Perhaps now is the time to produce structurally sound case parts in mixed colours and effects to get things moving along whilst also turning out 500-1000 truly unique cases. After all, the modular nature of the pyra means that 'perfect' case parts produced later on down the line could be swapped out at the will of the owner, make them bold and funky now and if I want black and business-like in couple of years I will buy those case sets then.
     
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  8. Neelix

    Neelix Insecticidal Maniac

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    While I can certainly embrace the "accept the flaws and fix them in a later revision" approach suggested by many here, and it may yet come to that, it sounds like the new plastics company already knows what the problem is and how to fix it, and unless the old company has actually disposed of the copper anodes already fixing it may be relatively simple if I understood ED correctly. It sounds like the new company has a lot more actual expertise amongst their employees than the old one did.

    That being said, I'd love to see a Pyra case with an intentional marbling effect and if that both looks good and hides the flaws in the mould, so much the better. :)

    ED: if it's just the surfacing of the mould that needs to be fixed does that mean that the flawed pieces are structurally sound, or is there an increased chance of breakage along the flaws?

    -Neelix
     
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  9. vcoleiro1

    vcoleiro1 Hardcore Member

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    What exactly are these copper anodes?
     
  10. TrashyMG

    TrashyMG Sarcasm Dispenser Staff Member

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    Yeah a little unsure what he means by that.


    an·ode
    /ˈanōd/
    noun
    plural noun: anodes
    1. the positively charged electrode by which the electrons leave a device.
      • the negatively charged electrode of a device supplying current such as a primary cell.
     
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  11. Pyramancer

    Pyramancer Very Active Member

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    @EvilDragon: Here (perhaps) are your heatsink sticks:

    https://www.digikey.com/en/product-...hermal-solutions/extrusion-profile-heat-sinks

    It says of these sticks that "[a] wide variety of secondary metal fabrication services through ATS' manufacturing services, including precision cutting, milling, punching, drilling, and notching, are also available".

    Here's a stick that's 300 x 15 x 6 mm (I don't remember if you mentioned the height) that would cost about US$0.45 per heat sink (not counting the cost of cutting) for 16.5 x 15 x 6 mm heat sinks:

    https://www.digikey.com/product-det...tions-inc/ATS-EXL61-300-R0/ATS2183-ND/5848391

    Or here [1] for heatsinks cut to 0.650 x 0.601 x 0.300 inches costing about $US0.09 each. These ones are extruded longways and can be had in sticks 6 ft long and longer.

    [1] https://www.heatsinkusa.com/0-601-new/

    Summary: Search for "extruded aluminium heat sink" -- although I've no idea how you say that in German!
     
    Last edited: Apr 7, 2019
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  12. Hellfleck

    Hellfleck Member

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  13. fusion_power

    fusion_power Advanced Member

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    I can imagine that plain black will look not that good but maybe we can go back to the "something almost black" idea like anthracite, which is also a mix of various different dark greys. Worth a try at least.
    How is this usualy solved? I mean, there are many plastic devices out there that don't have these issues, how does GPD solve that for instance? No aadditional coating pass? Different materials?
     
  14. levi

    levi Still fresh, damnit!

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    But it apprently isn't caused by the filling of the liquid plastic. It's caused by the application of the coating, which seems to be some kind of weird electrolytic process, if it needs copper anodes to work (but from my school level electrolytic knowledge, it's usually either the anode or the cathode that gets coated, so I don't really know how it works either).

    Edit: Or maybe it's a coincidence and this one they've coated has worse injection marks that previous ones they've shown. Maybe they're mistaken in thinking it's all down to the coating.
     
  15. Farox

    Farox Certified Guru

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  16. Neelix

    Neelix Insecticidal Maniac

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    See the video posted by Hellfleck above. The copper anode was used to create the surface of the mould itself, and isn't normally needed in the production process, which is why they weren't transferred to the new company with the moulds. It sounds like the moulds need to be resurfaced, like one would do to a damaged road surface to make it drivable again.

    - Neelix
     
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  17. levi

    levi Still fresh, damnit!

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    Thanks. My security setup and the design of this website means I don't see any indication that videos are present, other than an ominous gap which is easy to miss as you're scanning the boards. That is quite educational. Seems it's done before final finishing, so it's still a quite rough process, but it's still a step in preparing the surface for the addition of the coating later.
     
  18. rSl

    rSl **** COMMODORE 64 PYRA V2 **** 4GB RAM SYSTEM

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    maybe a lighter solid colour would show less of the imperfections?

    see these newly produced c64c cases done with original commodore moulds
    [​IMG]
    not so good looking black

    [​IMG]
    better looking light beige
     
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  19. Eight Bit

    Eight Bit Advanced Member

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    Those shrink marks on the C64 cases are what kept me from getting one of those.. shame really...
    I do have one of those blue kickstarter cases, that too has shrink marks but it's less visible than on the SX64 grey one.

    It does look less bad on the light case...

    And what I do like, is that you grab every opportunity you can get to promote that light beige color @rSl xD
     
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  20. rSl

    rSl **** COMMODORE 64 PYRA V2 **** 4GB RAM SYSTEM

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    i'll do my best!
    (but i don't want to come over as annoying, so this was the last time, promise) :D
     
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