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1500 questions
19
votes
2 answers
Is it possible to change the battery in a 54604 light brick?
I got 4 of these in in a bulk lot of Lego, but the lamp is getting quite dim in a couple of them.
Is it possible to change the battery in a 54604 light brick?
It looks like the brick should open, but I don't want to force one apart and break it.
Kramii
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19
votes
2 answers
How can I minimize the number of merchants for given set of requested bricks?
This question should be answered in Bricklink FAQ, but I didn't find answer there.
I'm a casual Lego hobbyist, I have a few sets with random pieces missing, about two dozens of them. Some are truly rare. What is the best way to find smallest group…
tomash
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19
votes
2 answers
What are the arched things above a wheel called?
I have a bunch of second hand bricks and some are "wheel wells" for the lack of better words.
I would like to find out how I use them for example at bricklink, but then I need to find the name for such a thing first
mplungjan
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19
votes
7 answers
What's the best way to glue/adhese the street baseplates to a plywood table?
I'm building a Lego city, and I want to permanently glue the road onto the table. But I don't want it to be "lumpy", or melt, and I want to make sure that the baseplates will not come off the table, whether it be water or indirect heat (such as…
Jesse Schweitzer
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19
votes
5 answers
Are there any health concerns with letting children use old LEGO kits?
I have a hoard of LEGO kits that passed from me to my nephew, and now to my son. Some of the kits that are included with the set date back to the early 1970's. Are there any health risks with passing the older kits down to my son? Have there ever…
bakoyaro
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19
votes
3 answers
How would you make a good pivot-arm suspension?
I once tried to make a 4 wheeled Lego robot using a pivot arm suspension system. The robot was motorized using 2 Mindstorm (2.0) motors (one one each side). I can't find and original picture but it looked like this big black one:
I used a Lego…
pcantin
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19
votes
2 answers
Bridge from just basic bricks?
I teach an after-school engineering class using LEGO bricks, one of our classes has the students build a bridge. Each student gets a custom set of about 150 2x4 bricks, about 300 2x2 bricks, and, if I'm feeling generous, about 15 2x8 plates. …
ascendlyJJ
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19
votes
4 answers
Why can't I reproduce this SD card box in LDD?
I've built an SD card box a few years ago. Now I am trying to reproduce it in Lego Digital Designer.
However when I tried to reproduce the closed version, LDD refuses to snap it in place.
In real-life, my box just snap very nicely. Why am I not…
Alvin Wong
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19
votes
5 answers
Why are there "unique" characters in many sets?
When I was young, about 30 years ago, I'd had no problem to have two policemen, two yellow astronauts or knights. Then I had some lack of Lego sets and didn't know what was happening on this field.
Now, when my son begins (or rather "has begun") his…
Voitcus
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19
votes
9 answers
What is the rarest LEGO production element (colour/shape combination)?
What is the rarest LEGO element according to the following criteria:
Genuine LEGO elements, not those available through third party vendors or otherwise modified elements. (So nothing from Brickarms.com, ChromeBricks.com, etc.)
Not prototype…
mcqwerty
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19
votes
4 answers
Is Mindstorms EV3 backwards compatible?
LEGO Group announced the next Mindstorms version, the EV3 which will be available in the Fall, 2013.
Does anyone know if the new version, specifically the controller, will be backwards compatible with the NXT 2.0 sensors and motors?
I'm assuming all…
user1262
19
votes
1 answer
What would be a simple trebuchet design at the Minifigure scale?
I would like to have a trebuchet design at the Minifigure scale and simple enough for kids 10+ to build.
Note 1: The counter weight can be any non-LEGO heavy object.
Note 2: On top of the standard LEGO bricks, we have a lot of LEGO Technics and my…
pcantin
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19
votes
1 answer
How is the roof on this bridge town formed?
I recently came across this build from Markus Rollbühler:
It includes many great details and building techniques. I'm curious how the conical tower roof is formed, though:
It's obviously made using a number of cheese slopes:
How are they all…
jncraton
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19
votes
3 answers
Is there a catalog of Lego building techniques?
As a Lego noob watching Lego Masters, I spot certain techniques being used time and again, without any real explanation (Lego Masters is great for entertainment, but offers little to no instruction). For example, curves can be created by alternating…
me--
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19
votes
2 answers
Is this part real LEGO or a knockoff?
I bought a LEGO lot off craigslist a few days ago with some sets and some bulk parts. It included some parts that appeared to have been bought in bulk (maybe pick-a-brick?). It also had some random non-lego pieces as we all know is standard to find…
MNAK_
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