Detail support material

Discussion in 'Finishing Techniques' started by euphy, Jul 24, 2010.

  1. euphy
    euphy New Member
    I'm curious about the transparent detail material - I understand there's a support material used for overhangs... If this is is trapped in a hollow form, what does it look like?

    I'm thinking of making a block with a negative shape as a hollow inside it, but with no hole to let the support material out. Will the shape of the form be visible inside? I also wondered about drilling a tiny hole into the cavity and injecting some dye or some dyed resin.

    Any ideas anyone?

    Cheers!!
    Sandy Noble
     
  2. Tommy_2Tall
    Tommy_2Tall New Member

    Hi!

    It has a yellow tint and is clearly visible if you leave it inside a transparent detail part.

    I still have loads of it trapped inside one of my ringpendant designs (hollow torus/donut with escapeholes) and actually adds a nice color to the center of the donut.

    I don't have any good pictures of that particular part though... planning do build a cardboard "lightbox" sometime soon to get decent pictures of all my precious Shapeways orders so I might update this thread then.

    I also recall a "dragon quartz" model made by er1c that used that technicque to do a "Jurassic Park"-style dragon in a crystal:
    http://www.shapeways.com/forum/index.php?t=msg&goto=5413 &S=c31f533b6f44acc0eaa13a36175022bd#msg_5413

    Cheers!
     
  3. arno
    arno New Member
    Hi,

    please note that recently we changed our model upload so it now solves overlapping 'shells', making volume calculation better. See this blog.

    As a drawback of that, your model will (should :rolleyes: ) become solid when there are no holes.

    Kind regards, Arno
     
  4. euphy
    euphy New Member
    Thanks for your reply Tommy, and for the link. That's quite similar to what I was hoping to do (in theory) - something indistinct.

    Arno, I wonder if I made a block with a hollow space in it, but the hole was too small to let the support material out properly, what might happen then? Is it "allowed" to do something like that?


    Ta folks,

    Sandy Noble
     
  5. pp
    pp New Member
    HI Sandy,
    It probably will work however what might happen is the following.

    The support material tents to expand over time because it takes up water.
    In time that might mean the tension will become to much so the model will break.

    It's all depending on the thickness of the wall.

    So how is that for a new design restriction... sorry, challenge?

    Hope this helps a bit...

    Peter Paul
     
  6. euphy
    euphy New Member
    Ha ha, thanks Peter, that's a good design "maybe"! I might try some trials and see what happens. I was thinking about injecting something coloured into the space, and it would soak up through the support material. Would a kind of capilliary action saturate the whole lot of the support material?

    Cheers guys
    SN
     
  7. Whystler
    Whystler New Member
    I have experimented a bit with this material and it's support schtuff. The support material is waxy or maybe like a solidified gel? And it flakes apart. It's not durable like the build material.

    I found two things about the supoprt material when it is trapped inside of a detail-material model:

    1. There is no obvious visual separation between the support material and the transparent build material. So if you were to have a cavity inside of a transparent detail model that was filled with the support material, it would be difficult to make out the shape.

    2. The support material is not super solid. It has some give. So if you make a model with a thin skin of build material and fill it with the support material, it will crack like an egg. The model will be more stable if it has a thin skin but with no support material. However, you will have to be sure that the technicians don't crack your thin skin while removing the support material.

    Also, I should point out that the black detail material's support schtuff appears to be the same as the other detail materials *except* it is also black.

    Hope this helps :)

    -Whystler

    -Whystler
     
    Last edited: Aug 13, 2010