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A comment on How to Make Everything Ourselves: Open Modular Hardware. Parent comment

Re:How to Make Everything Ourselves: Open Modular Hardware by TeMPOraL on Friday June 29, 2018 @03:52AM (#17423077)
I used this one:

https://www.amazon.com/Lego-Gray-Brick-Separator-LEGO/dp/B00...

I wonder about the design change, with this plus-like protrusion at the top. Is it to enforce correct direction of operation when using the separator?

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Re:How to Make Everything Ourselves: Open Modular Hardware by Tomte on Friday June 29, 2018 @06:07AM (#17423570)
It is to push out cross axles that are part of Lego Technics.

See for example set 10074-1.

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Re:How to Make Everything Ourselves: Open Modular Hardware by friendzis on Friday June 29, 2018 @04:55AM (#17423291)
I guess that "plus-like protrusion" is designed to fit "tubes" on the high bricks, primary use being removing low bricks from high bricks. I guess one could use two separators side-by-side to firmly hold 4x2 brick, IIRC 2x2 had one "tube" and 4x2 had two "tubes".
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