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Material of Ultimaker² transparent side walls

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I'm searching for a project a semi transparent material that diffuses light very well. I've tried "milky" acrylic glass but that works not as good as I hoped it does.

Now that I've got the Ultimaker² I saw that the transparent side walls would suit perfectly to my project but I have no clue what material it is and where to get it.

Can anyone tell me of what it is? Any hint would be great!

Thanks in advance,


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@xxxprod: As you may (or may not) know, Ultimaker printers are open source. That means that they published drawings for every part of their printers, including the Ultimaker2.

So the only thing one has to do is to check the drawing of e.g. the left panel:


And here is your answer: Perpex frost. Good luck with your project!

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