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Questions tagged [plastics]

The majority of LEGO elements are made out of ABS (acrylonitrile butadiene styrene)

3
votes
7answers
184 views

What Lego part(s) would hurt the most to step on?

We've all heard (and probably experienced) the long-running joke that stepping on a Lego is the absolute worst. People have determined this is due to the bricks' high compressive strength, small size,...
7
votes
1answer
137 views

Why do LEGO parts break?

I disassembled the Airplane set 7893 with normal pressure on the bricks and it happened that some parts broke like dry brittle leaves, see picture. The storage conditions have been in the open and ...
7
votes
2answers
180 views

Why are these hinged plates slightly different colors?

Something I've noticed is that certain pieces appear to be slightly different colors for other pieces of the same color. In particular, hinged red pieces seem to be the most noticeably different, ...
15
votes
1answer
351 views

Why do LEGO bricks yellow at different rates?

So, here is my LEGO Space Shuttle. Originally built in 1991, never disassembled (unlike the rest of my sets), so all parts are original and all were exposed to the same amount of sunlight. However,...
3
votes
1answer
65 views

Do clear transparent pieces suffer from a yellow tinge over time?

Any idea if clear 1×1 round plates suffer from color differences? I recently got a bag of them and they appear to have a yellow tinge.
0
votes
1answer
47 views

I am looking for robot constructor general plastic parts [closed]

I do not know how call it, but I mean something like these pics: Can I find something like this plastic parts in general or I must design them in solidworks and ordering for mold production by myself?...
9
votes
2answers
326 views

Why are these bricks slightly shorter than normal?

I have two red 1×6 bricks that are slightly shorter than normal and also a bit deformed. For comparison, I here show them together with regular 1×6 bricks (the regular brick is the top one of each ...
7
votes
1answer
445 views

What is the difference between the plastic used in mainstream minifigs and the plastic used to make the popular collectable series of minifigs?

What is the difference (if there even is a difference) between the plastic used in mainstream minifigs and the plastic used in the popular collectable minifig series? It seems to me that the ...
1
vote
0answers
57 views

Are LEGO tires natural or synthetic rubber? [duplicate]

LEGO is the No.1 tire maker in the world by number of unit. It produce the same number of tires in a year as both Michelin & Bridgestone together, the 2 biggest tire manufacturers. A "real" ...
7
votes
2answers
562 views

What are LEGO rubber bands made of?

I have noticed that LEGO rubber bands (along with just about everything else LEGO) are fantastically durable. They last ages without getting crusty and dying like most commonly available rubber bands....
4
votes
1answer
3k views

BPA in older LEGO

I have some older DUPLO sets. I am concerned about the BPA that might be in them. Do any current sets of DUPLO or LEGO contain BPA? Did they in earlier sets?
0
votes
2answers
274 views

Would LEGO use recycled plastic? [closed]

I have been studying the application of new recycling technologies because I am concerned with plastic pollution. I have thought of a way to apply new technology differently but the missing piece of ...
5
votes
2answers
917 views

Strongest LEGO structure - (2) Floor

What is the strongest LEGO box structure? I am going to build a LEGO computer case. Different from Mike Schropp and greenyouse, I am planing to build an upright case. (This is a general "strongest ...
7
votes
3answers
863 views

Strongest LEGO structuce - (1) Pillars

What is the strongest LEGO structure? I am going to build a LEGO computer case. Different from Mike Schropp and greenyouse, I am planing to build an upright case. (This is a general "strongest LEGO ...
5
votes
1answer
86 views

Is it safe to remove PC (polycarbonate) arms from minfigures?

I would like to replace the clear PC arms on the Chima ice figures with opaque ABS. Would I still be able to use the clear PC arms with other figures after I have removed them? I know that removing ...
7
votes
1answer
529 views

What plastic do Quatro blocks use?

I recently picked up a heap of Quatro blocks, and noticed that the plastic seems to be much softer than the normal ABS-based Lego and Duplo blocks. Does anyone know what kind of plastic was used in ...
6
votes
3answers
2k views

How to differentiate Cellulose acetate vs ABS LEGO bricks?

If one had a large tub of old LEGO brick, with some pieces going back to the 1950s, but all mixed together, are there any distinguishing features or appearance to the 1950s cellulose acetate bricks ...
6
votes
2answers
2k views

What are LEGO baseplates made from?

I want to lasercut a green LEGO baseplate for a project, but cannot cut a plastic with the laser if it contains PVC or Vinyl. Does anyone know if the green baseplates are free from these materials.
8
votes
5answers
1k views

Factories that could make off-patent bricks?

I'm quite interested in finding a factory that can produce a small-ish run of high-quality plastic bricks that I can use in my classes and possible to re-sell as stand-alone kits. I only need a few ...
131
votes
3answers
82k views

How much usage can a LEGO piece take before it loses its 'clutch power'?

In this article it's mentioned that one very important feature of the LEGO bricks are their 'clutch power' which is "the ability of its bricks to snap together tightly while also being easy to ...
14
votes
1answer
350 views

What color has been produced in the highest volume?

What color makes up the highest percentage of LEGO elements produced since ABS plastic was introduced in 1963?
16
votes
2answers
4k views

Are LEGO elements safe to use in an aquarium with fish?

Are LEGO elements safe to use in an aquarium with fish? I've never seen LEGO elements in a working fishtank.
22
votes
2answers
15k views

How much heat can LEGO bricks withstand?

I was thinking on making a decorative LEGO candle holder. It would be made out of regular ABS LEGO bricks, but also transparent ones. Because there will be an open flame involved, I want to make sure ...
27
votes
2answers
35k views

What kind of plastic are LEGO bricks made of?

It’s rather obvious that Lego bricks are made from plastic, but there are many kinds of plastic. Is the recipe for LEGO bricks plastic secret?
24
votes
1answer
4k views

Are transparent neon Lego bricks made from a different plastic than usual?

There are several colors of transparent, fluorescent Lego bricks. In particular, "trans neon yellow" and "trans neon orange", introduced in the early 1990s, exist in a variety of specialized shapes ...
23
votes
1answer
2k views

Why are old LEGO bricks more brittle than new ones?

My vintage LEGO sets (circa 1980) are difficult to unbuild. Some pieces are prone to break. Did the plastic recipe change with time or are the bricks simply degrading?