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  1. #141
    Regular 3D Printer
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    I can't remember but by God I will look and see! Free filament is a nice price!!

  2. #142
    3D Printer God(dess)
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    This is 3D Solutech's ABS red...

    Vividness; yes true-red; oh so close

    3dsolutech_red.PNG

    - - - - - - - - - -

    Ant_insulator.zip
    And one more final version... This one is stronger by virtue that I put a looped tube inside.
    Print using ABS, strong, and honeycomb with sidewalks. no need for supports.

    ant_foil_final.PNG

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    That's 3D Solutech's "brown" btw...

  3. #143
    3D Printer Noob
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    Terrain puzzle of Telluride, CO and the surrounding area. 130 pieces that each took on average 50mins. Printed in wood-fill PLA and then stained.

  4. Likes TommyDee liked this post
  5. #144
    3D Printer God(dess)
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    Excellent!

  6. #145
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    WOW! That is impressive! All that done with the incredible cube 3??? I know, not all at once.

  7. #146
    Administrator bolsoncerrado's Avatar
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    How did u do the cut thru puzzle pattern?

  8. #147
    3D Printer God(dess)
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    This is oh-so funny that I can't help but post it.

    I've printed a couple of wind spinners with bearing built into them.
    It has a little printed block that it spins on and is held by a bamboo sticker.

    Twice now a squirrel has chewed the bamboo to remove the spinner, and has removed the holding block from the spinner.
    1st time I found the slightly nibbled plastic block a few yard away.
    Today, the 2nd time, I find bits of plastic at the base of a tree and no little block.
    Spinner is fine and the replacement block fixed things right up.

    But what is this squirrel thinking? If you peel the plastics, it'll find a nut inside?
    He/she's going to be thoroughly disappointed!

    They are completely ignoring the gray spinner next to it.

    https://photos.google.com/share/AF1Q...xCYkJhUWpwcC13

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    Okay, I'm putting this here to keep the other stuff from getting confounded even more.

    I have long desired to take apart the .cube3 files to understand how the 3D Systems slicer deals with certain aspects of slicing.
    Knowing the determination of the slicer lets me take full advantage of the stock Cube 3 characteristics.

    This case is particularly telling as it is unique to generic volume slicing.

    Turns out that 3D Systems offsets the perimeter of your part by 0.21mm.
    This logic says that if you want the trace next to the outside trace to fuse, you want the inside trace to be offset by 2x 0.21...
    This means an offset of 0.42 x 2 = 0.84 is the thickness of the part in a perfect world.

    Sure enough, the world is not perfect. I know, right?

    But, the outside dimensions of my parts based on these numbers is within 1% of the nominal (pretty darn good!)
    The wall, expected to be 0.86 came out to 0.92 consistently. I definitely expected that since I've never measured a wall much under 0.9.
    Even the height came out to 4.04 (vs 4.0) even with my huge 0.23mm nozzle gap.

    Anyway, this is the forensic data from code...

    small_fence.PNG

    You are looking at the original model (white) and it's dimensions, and in blue is the machine code trace based on G1 positions within the BFB file.
    Notice the center offset that the Cube 3 consistently uses when you let the Cube 3 app center the parts on the printing bed.
    The original STL origin is per the white outline.

    Now here is the file as printed...

    mini_fence.PNG

    Now here is the kicker... the two walls are beautifully fused. Surprise! <<== not really.

    Now I need to test this with 4x 0.42.
    Will it print with 4 traces for the wall or still only 2? What about 4x 0.41? 4 or 2 traces?
    Anyone care to lay odds?

    Anyone care to do some comparative testing?

    - - - - - - - - - -

    ^ I LOVE FINALLY KNOWING THIS STUFF! ^

    ...but I'm weird and proud of it.

    Thanks @swwinterry !

    - - - - - - - - - -

    Findings for 4-trace walls...

    I was hoping for a slightly different result but here is the actual output.
    That 0.5mm offset between traces is a problem but both of these created the very similar part;
    Same actual wall thickness and same actual overall size ID/OD and Height.
    One thing is remaining constant... the 0.21mm offset.

    Even at 1.6mm wall, it does print 4 side-by-side traces.

    interesting_at1dot6.PNG
    interesting_1dot68.PNG

    Now to find the cutoff when it switches to 2 traces.

    - - - - - - - - - -

    Looks like a 1.5mm wall messes everything up. Two traces a mile apart... oh 1.08mm apart. That's 1080 microns BTW

    breakdownat1dot5.PNG

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    Some comparison.

    compare1.PNG
    compare2.PNG

    Obviously the 1.5mm wall didn't even come close to sticking together. Just the cross-over at the start/end corner is connected.


    That tells me that I can try to optimize walls in design just a bit more. A single trace (minimum wall) will be around 0.9mm (900 microns). I can design this down to 0.08mm and I get excellent fusion between layers. Still need to test longer runs than 20mm.

    For a double trace wall, I will probably stay with the 1.68mm as a minimum. The 1.6mm is identical by the naked eye but there is obviously a very small difference.

    I need to do this for the almost solid too, but this is great information for me.
    0.84 and 1.68 are keepers.
    Last edited by TommyDee; 04-12-2018 at 02:51 AM.

  9. #148
    Administrator bolsoncerrado's Avatar
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    You printed these with the Microsoft builder?

  10. #149
    3D Printer God(dess)
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    Nono...this was right out of the cube 3 app.

  11. #150
    Administrator bolsoncerrado's Avatar
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    Yeah but which slicer? Their app?

 

 

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