"Dark Lego, show me the forbidden connection techniques":


a leaked PDF of a Lego internal corporate document describing "illegal" connections that must not be used in official kit-building instructions

Much has been written on the analogy between lego connections and programming language syntax; that would make this illegal connection PDF the equivalent of, like, undocumented compiler features or something.

@nindokag I thought the equivalent would be more like negative programming patterns: “but it works!”

“yes, for now, but for the happiness of children please don’t do it”

"...there is the potential for elements (and children) being stressed."

Does this also apply to programming?

@nindokag A lot of these design restrictions seem to make sense from an engineering and Q&A perspective. They want to avoid unnecessary compression, tension, angles that prevent a proper fit, and ultimately part failure.

Nothing worse to a child than a lego piece that is broken.

@nindokag @tsturm I was expecting that more of these would just be "oh, this looks bad", but AFAICT they have a good rationale for each around proper fit and/or undue strain on parts

It reads like a secure coding guide, complete with "ok, this is legal but not recommended"

@nindokag I have definitely done several of these things. Several others I now need to do ASAP.

@epilanthanomai @nindokag
Are there seriously prople who need building instructions for Lego bricks?
I use them for mechanical protoyping and for me it appears obvious which connections fit together right, and which others are forced

@crazy_pony @epilanthanomai

(apologies for a slightly snarky answer, but): the fact that most lego sets *come with building instructions* seems to indicate the answer is "yes"

you're probably above-average in ability to intuit connections.

I know I used the "wedge a plate edge-ways between the rows of bumps" technique frequently as a kid, and didn't know it was stressing the plastic.

@nindokag @epilanthanomai
no worries, i dont even notice if it would have been snarky

For me Lego bricks are just buildig bricks that i bought in neutral packages for prototyping purposes. So i have to say i dont know which instructions are sold with the kits for building specific models and how much fantasy and creativity the people who buy specific kits do have outside of them

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