26 votes
Accepted

What are black sausage pieces used for in Crocodile Locomotive set 10277?

These are placed next to the magnets at the front and the back of the train. See step 142 in the instructions. 4 are needed and there is 1 spare. BrickInstructions shows it here:
Joost's user avatar
  • 8,043
25 votes

How To Make a Small Security Camera?

Added a Ver.2.Oh belowww... Here's the LDD file if you want it. Here's the file for 2nd helpings. Eat up!
Rin Rio-Oki's user avatar
  • 8,893
25 votes
Accepted

How can my daughter turn her horse into a unicorn?

A 1x1 cone with an inverted positioned screwdriver just might work here. So, I'm saying just might based off the the halved cast line of Peggy's head. The base peg of the horn/drill-bit would be too ...
Rin Rio-Oki's user avatar
  • 8,893
23 votes

How To Make a Small Security Camera?

I've come up with five different ways to make a micro security camera that look like your reference image. I'll run through the different methods in the image above from left to right 1 through 5. Far ...
David's user avatar
  • 1,357
18 votes
Accepted

6x6x6 cube with smooth plates on bottom?

While there could be various approaches building studless the easiest one would be with Tile, Modified 2 x 2 Inverted. These modified tiles have studs on one side, which fit under bricks and plates, ...
Alex's user avatar
  • 23.2k
18 votes
Accepted

What can this curved brick with square holes be used for?

The part is Window Round 3 x 3 x 2 (73878). It was a new mold for 2021, and one of its first uses was as windows on Andrea's House (41449). This piece can be used on buildings anywhere you'd like a ...
jncraton's user avatar
  • 40.6k
15 votes

How can my daughter turn her horse into a unicorn?

If the problem is that the base of the horn is too big to fit in the hole on the chanfron you have to make the former smaller or the latter bigger. Careful work with a file/scalpel, if you're good at ...
BlokeDownThePub's user avatar
14 votes

What are these pieces for?

According to the official description, these are for customizing the completed build: This LEGO Batman toy playset includes 2 minifigures and children can customize their builds, minifigures and ...
zovits's user avatar
  • 16.2k
13 votes

How can my daughter turn her horse into a unicorn?

A possibility might be using Horse Battle Helmet (unicorn) parts 89524 or 13745: However I'm unsure if those would fit. The head geometry of the horse part in question (93083c01pb08) seems to be ...
IvanSanchez's user avatar
  • 8,714
12 votes
Accepted

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

I think this one would be in the top 5: Tile, Modified 2 x 2 with Pin (part 2460)
BalazsToth's user avatar
12 votes

6x6x6 cube with smooth plates on bottom?

As mentioned in another answer, there are dedicated pieces for this now. But... 6x6x6 cube is plenty big enough to have a stud-reversing construction inside, then the bottom can be a simple 6x6 plate ...
ProbodyneHecs's user avatar
11 votes
Accepted

Identifying Parts Used For The Escape Hatch of Sariel's Tiger XL Model

🎶 First three from what we can see...🎶 Part: 4735 Bar 1 x 3 with Clip and Stud Receptacle (Robot Arm). Part 2958 Technic, Disk 3 x 3. Part: 75c03 Hose, Rigid 3mm D. 3L / 2.4cm. 🎶Last two ...
Rin Rio-Oki's user avatar
  • 8,893
11 votes
Accepted

Compatibility of sports ramps

I've put those two parts side by side in LeoCAD, and it's quite obvious they have different shapes: A side view illustrates the difference even more clearly: They will somewhat align if one of the ...
IvanSanchez's user avatar
  • 8,714
10 votes
Accepted

Brick-built sails for a pirate ship

Great question. It sounds like you are building a fairly large ship. If the scale is large enough, brick-built sails can look quite nice. You can add shape, contour, and texture using various building ...
jncraton's user avatar
  • 40.6k
10 votes

Minimal mine track

I think you want to consider using the 4-stud-wide "rollercoaster" tracks, part numbers 25059, 25061 and 26022. Here's how those to parts look like in set 60228: The straight track are 8 or ...
IvanSanchez's user avatar
  • 8,714
10 votes

If I put the bushing wavy side the wrong way will it affect my build? (Technic Ferrari car)

Assuming you're talking about Technic Bush : The wavy side is such that it can interface with studs. For example using a Technic, Plate 2 x 4 with 3 Holes : As long as the bushing isn't sitting ...
Sander De Dycker's user avatar
9 votes

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

I nominate this little bugger: Got it in a bulk lot, and oh boy is it painful to walk on. it rests flat on the ground thanks to the wings, and the crest is a nice touch for delicate underfoot.
rienafairefr's user avatar
9 votes

Why doesn’t part 30099 fit into the System?

This picture might explain the reason: As you can see, arches form a nice circle to fit round modified plate. All fits well, except the very bottom. Making the bottom edge fit the plate/tile nicely ...
Alex's user avatar
  • 23.2k
8 votes
Accepted

What's the purpose of the decoration on the BrickHeadz piece?

According to LEGO, it's the BrickHeadz icon with the series number. He also stands on a buildable baseplate with series number and BrickHeadz icon for easy display -- Batman Brickheadz LEGO Shop ...
Alexander O'Mara's user avatar
8 votes

2x2 macaroni pieces

Yes it fits as well as you'd expect. same as any adjacent brick, so there's not much friction if you want to slide it up and down like a piston.
Craig's user avatar
  • 3,231
8 votes
Accepted

Is the LEGO train motor 88011 waterproof?

LEGO's electric or electronic parts are usually not waterproof, with a small subset that was explicitly designed for such use in a few nautical-themed sets between 2004 and 2007. These motors feature ...
zovits's user avatar
  • 16.2k
8 votes

If I put the bushing wavy side the wrong way will it affect my build? (Technic Ferrari car)

I assume your set is Ferrari Daytona SP3 (42143). The step 81 you refer to looks like this: In this particular case and most of the time it doesn't really matter which side you place Technic Bush ...
Alex's user avatar
  • 23.2k
8 votes

What is this 2x2 part with one corner curved up?

The part is Plate Special 2 x 2 with Double Inverted Curve, 1 Stud (4190). It was introduced in a few sets in 2023. It's original use was to provide an upward curve on roofs. This can be seen very ...
jncraton's user avatar
  • 40.6k
7 votes

Why was the original brick separator changed?

My guess would be that they wanted to include one in more sets; so they made a smaller (cheaper) version and took the opportunity to add functionalities, such as the technic axle remover or the flat ...
Joubarc's user avatar
  • 21.2k
7 votes

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

This assembly of pieces will not tickle, so let's dive in: First, the teeth are placed in reverse of each other so the foot and all that weight is forced to rock on the two little pointed tips. ...
Rin Rio-Oki's user avatar
  • 8,893
7 votes

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

The 1x1 brick is both small enough to mean that you get edges no matter which way up it is, and has all the sharp edges and corners of the 2x2 brick, just packed into a smaller, more evil form. That ...
Matthew's user avatar
  • 416
7 votes

How can my daughter turn her horse into a unicorn?

Yes, you can drill it. Slowly, by hand. You want to end up with a 1/8 inch bit, but I found it easier to step up using a couple of smaller bits to get there. The bit doesn’t need to go in very far ...
Lcm's user avatar
  • 71
7 votes
Accepted

Why doesn’t part 30099 fit into the System?

I would assume that this is to do with stability and flexibility of the element, combined with the rectangular nature of the system. There are a number of uses of the part where it's not used to ...
Zhaph - Ben Duguid's user avatar
7 votes

Feathered Headdress from the Islander, female figure

Sometimes ignoring a problem yields its own solution - like the Cabaret Singer.
RSchulz's user avatar
  • 7,512
6 votes

What is the use of a single ultrasonic signal?

I'm not an EV3 expert, but my understanding is that continuous mode stores results into a buffer that can be read nearly instantly. Single mode will need to wait to hear a ping back before reporting ...
jncraton's user avatar
  • 40.6k

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