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1500 questions
10
votes
2 answers
What set is this brown (wall?) element from?
While sorting out some old Lego finds, I stumbled across this piece:
I have absolutely no idea what this element could be for other than some kind of wall part, and even then I have never seen anything like it before. It is the same colour as…
RedRiderX
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10
votes
2 answers
How are these transparent stairs made?
What techniques and bricks are used to support the transparent pieces? Can anyone work it out?
tipsandbricks
- 279
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- 8
10
votes
2 answers
How often does LEGO make colour substitutions?
I'm currently building the UCS Millennium Falcon and ran into a step where the instructions say to use two different shades of grey in the greebling, but the bags for that step only contain one single shade (but the right quantity).
This seems odd…
Moo
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10
votes
1 answer
What set are these LEGO assemblies from?
I bought a lot of second hand LEGO - it was an utter bargain at £10 - and have identified loads of different sets, however this part is infuriating me as I can't identify what it could be part of. Perhaps a submarine? It looks like a periscope in…
Caz
- 173
- 5
10
votes
2 answers
How to lubricate the 4.5v train motor for set 7722?
How I can lubricate the 4.5v train motor on my #7722 train set? It squeals.
Nick
- 101
- 3
10
votes
2 answers
How to estimate the pieces of a construction from just one photo?
My teacher is handing points to anyone who could guess how many pieces are in the construction shown below. I’d say there are about 350 but most people are saying thousand or more, which is insane to me. The only clues are that it is 43 cm long and…
Alain Llamas
- 101
- 2
10
votes
5 answers
Brick Wall psychology: PAB cup filling strategy?
Since I don't live next to a LEGO store I don't often have the opportunity to stand in front of a Pick A Brick Wall. Recently, I filled my large PAB cup for the second time. When I browsed the wall, I found several pieces that fit into my current…
Metalbeard
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10
votes
2 answers
How can I build a brick-built monorail track?
LEGO haven’t released a new monorail set since the 90s, and the track parts that were made are very expensive and hard to find.
I am interested in building a brick-built alternative. I am particularly inspired by the build shown…
Ambo100
- 17,591
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10
votes
1 answer
Different surface roughness of tiles. Quality issue?
Recently, I filled a PAB cup in the nearest LEGO store. Among other parts, I also took a lot of light bluish grey 2x2 tiles. The following image shows some of these:
However, reflected light reveals that the surface of the tiles can be quite…
Metalbeard
- 2,585
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- 39
10
votes
1 answer
Lego Mindstorms EV3: programming language recommendation
I am planning to build an autonomous car in LEGO Mindstorms that will use ultrasonic or infrared sensors and in the future also a camera for line tracking. Currently I construct my programs using the Mindstorms building blocks, however, I am…
ec-m
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10
votes
1 answer
What internal electronics does LEGO Boost use?
What specific electronic components are present inside the Boost Move Hub?
jncraton
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10
votes
3 answers
What is the easiest technique for large builds?
I recently acquired the Space Shuttle set, #10231, and find that it isn't a staged build--one with sequential bags. This leaves me at a bit of a loss over how to organize and search through 1200+ pieces while putting it together. What technique will…
William Grobman
- 355
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10
votes
1 answer
Optimal way to remove door from frame
What is the best way to remove the transparent door from the white frame?
I am asking this since I want the door to last as long as possible without damaging the slot or bump. Any method will do, but the less vigorous, the better. Also, the method…
Xetrov
- 263
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- 11
10
votes
4 answers
How to make Mindstorms respond differently, depending on which sensor is triggered?
I am new to Mindstorms (but in my day job I am a programmer).
I want to make my robot do one thing if the touch sensor on port 1 is pressed, and do something different if the touch sensor on port 2 is pressed.
If nothing is pressed, I want it to…
AJ.
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- 4
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10
votes
1 answer
What is the name of the piece that is often used to switch gears?
I have been trying to find this part on BrickLink and have searched every Technic category. I have come up empty.
Could someone provide the name of this part so that I can find it on BrickLink?
Kirk Woll
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