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3 votes
1 answer
223 views

Technic pin on a pole: is it an illegal technique?

1 vote
0 answers
85 views

I am building the Lego 42131 D11 dozer and some of the parts are moving in reverse when testing

7 votes
1 answer
259 views

5x3 Half Round Problem

13 votes
1 answer
1k views

Mechanical auto-unblocking mechanism

16 votes
6 answers
4k views

Estimate building time for a given LEGO set

5 votes
1 answer
456 views

42082 crane boom doesn't engage

4 votes
1 answer
148 views

Lego rough terrain 42082, page 57 book 1 - how does it connect internally

19 votes
1 answer
5k views

What would be a simple trebuchet design at the Minifigure scale?

5 votes
0 answers
288 views

How do I build my LEGO slope so it connects to the flat top without any notable ridges?

9 votes
2 answers
526 views

How can I build a Lego slope of this exact angle with ideally only legal techniques?

3 votes
1 answer
259 views

Piece in Lego 21327 Typewriter Step 26 can’t be flush as depicted in the illustration

9 votes
4 answers
590 views

Combine Duplo feet with regular LEGO

10 votes
0 answers
201 views

How To Ensure Only One Brick is Fed Into a Lego Sorting Machine at a Time?

5 votes
1 answer
381 views

Any cheap Technic sets with a good variety of parts?

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