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  1. #1
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    What 3D printer are you using?

    Post up what 3d Printer you have and any pics of what you have printed.

  2. #2
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    Using a home built copy of an ultimaker. This is my 7th 3d printer and by far the best so far.

    Videos of it printing at 200mm/sec at 5000mm/sec/sec acceleration

    http://www.youtube.com/user/KulitorumCom

  3. #3
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    I have a Stratasys Dimension SST 1200es machine when it works it's great, but I honestly feel I spend more time maintaining it than using it. I've had to go as far as taking the head off to clean out some clogging. The biggest issue is the humidity level is rather high in Florida. This humidity attacks the soluble material and is then boiled as it's coming out of the tip making a huge mess. The only solution I have found is to run a dehumidifier when in use and to take out the soluble cartridge in between uses which wastes material. I've used this same model machine when I lived in Minnesota they didn't run into this issue. I plan to post a few pictures of what I can share Monday.

    tldr: Stratasys Dimension SST 1200es
    Quick Rating: 8/10 (If you live in a non-humid place.)
    Last edited by dietzc; 12-19-2013 at 10:23 AM.

  4. #4
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    I had a Solidoodle 2 (which now has a new owner). I currently have a Rostock Max from SeeMeCNC. The Rostock has been upgraded with carbon fiber arms from TrickLaser and a new model extruder. The bed now has a borosilicate glass plate.

    The maker space I belong to (ClubCyberia.org) has a Mendal Max.


    Sorry no photos here at work.

  5. #5
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    when you turn the machine on after sitting for some time go into the head maintenance and set the feeder wheels to purge a bunch of material out for both support and model, this will clean the extruders without taking the plastic cover off.

    Quote Originally Posted by dietzc View Post
    I have a Stratasys Dimension SST 1200es machine when it works it's great, but I honestly feel I spend more time maintaining it than using it. I've had to go as far as taking the head off to clean out some clogging. The biggest issue is the humidity level is rather high in Florida. This humidity attacks the soluble material and is then boiled as it's coming out of the tip making a huge mess. The only solution I have found is to run a dehumidifier when in use and to take out the soluble cartridge in between uses which wastes material. I've used this same model machine when I lived in Minnesota they didn't run into this issue. I plan to post a few pictures of what I can share Monday.

    tldr: Stratasys Dimension SST 1200es
    Quick Rating: 8/10 (If you live in a non-humid place.)

  6. #6
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    Quote Originally Posted by 3dprinter View Post
    when you turn the machine on after sitting for some time go into the head maintenance and set the feeder wheels to purge a bunch of material out for both support and model, this will clean the extruders without taking the plastic cover off.
    The problem doesn't lie in the just the tips/head area however. It affects the entire cartridge of soluble material. I've examined both brand new soluble and the used soluble after a boiling issue under a microscope and there is visible pitting from material that was inside the cartridge and as it gets warmer the pit expands to a bubble, and then after it leave the tip the bubble pops causing the soluble to not adhere fully to the tray. If you aren't watching it then the entire part sprays down onto nothing. I've since moved the machine to my personal office instead of the office at the end of the hall (noticeable humidity level difference) and that has so far made a large improvement in the life of our soluble material.

  7. #7
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    I also rub that build plate with some rubbing alcohol before putting into machine, I found that works with first layer adhesion

  8. #8
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    Good afternoon dietzc,

    What you're experiencing is the pitfall of hydroscopic materials that absorb moisture from the environment. This is why injection molders must run many plastic materials through a dryer before molding parts.

    I would suggest you remove the material and support cartridge from the printer when you aren't using it. Store them in something that is air tight and put some desiccant material in to absorb any moisture. I know you will waste a couple feet of material each time you remove it from the machine but you should eliminate the moisture/print problem.

    If you know a day ahead of time that you'll be printing some parts you could also place the material and support cartridges into an oven at a very low temperature (around 100 - 120 degrees F) over night to remove moisture and dry out the material. The cartridges that hold the material are injection molded out of ABS so this temperature range should not distort them. Just don't put any weight on them. Keep the cartridges in sealed plastic bags until you're ready to use them.

    Have a terrific Holiday Season!
    Robert
    3D Accuracy
    www.3d-accuracy.com

  9. #9
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    I'm using a printer of my own design. I use LinuxCNC for the controller. The table has a working area of about 25 X 25" with about 7" of Z travel. The path from extruder to hot end is all metal. so no oozing anywhere. The extruder is machined from two pieces of aluminum and acts as a heat sink. It's also bolted to a large heat sink with fan cooling. Here are some photos of the partially assembled extruder.

    IMG_0044.JPGIMG_0045.JPGIMG_0047.JPGIMG_0048.JPGIMG_0049.JPG

  10. #10
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    5 limit count on files so I couldn't upload the rest of the photos in one post. Here's more.

    IMG_0050.JPGIMG_0051.JPGIMG_0052.JPGIMG_0053.JPG

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