How To Make A Lego Safe

We have a fun LEGO® project idea for you! Build a LEGO® safe with a working lock and key. In this post, we’ll show you the many ways kids can approach this project. After learning some basic techniques, kids can design their own. What a fun STEM building challenge!LEGO® machines are fun to build. It’s great to build something that actually works! Kids will also enjoy this LEGO® catapult and this LEGO® candy maker. Learn about leverage and mechanics – more details below! My oldest son designed the mechanism for the first lockbox, then I built the box to make it look good. We make a good team. He’s a great engineer and comes up with mechanisms I couldn’t make, but he doesn’t make “cute” or make things look artistic. I can handle that part! And really, kids can build this part in any color they want. We display our LEGO creations in solid colors because the pictures are less visually distracting and it’s easier to see what’s going on, but kids can do anything they want!See the dark gray drawer to the left of the safe? It won’t open unless you use the key!The safe (or you can call it a coin bank) has a slot for coins, to open the drawer slide the key into the box with the teeth facing up. Slide all directions, then rotate the key to the left. For security purposes, it’s interesting to generate more than one key. Only one will install the lock and open the drawer. But siblings and friends won’t know which key is right!Want to see a demonstration video? Click below to play with the video.Ready to make your own? Read more: how to analyze risk for a business planHow to build LEGO® Safe with Key:I recommend starting with a 16 x 16 sheet. It’s a decent size for building a drawer that isn’t huge but can hold lots of coins or other items. Cover the tile-sized area so the drawer can slide easily. The bricks shown form a 12 x 12 square, you will need a brick wall in front of the drawer and behind the drawer. Leave one side completely open. Otherwise, you will need to build a channel for the lock. (We’ll talk about that pin coming out in a minute.) Here’s how the lock works. I removed a few more bricks so you can see everything clearly. The idea is that the key slides into the channel. When you turn the key, the teeth engage the openings in the wall and push the drawer open.To use a key, you’ll slide it into the channel. Slide all the way in until it touches the back of the safe. Create a 12 x 12 drawer. I used two 6 x 12 panels and attached them to a 4 x 8 sheet. The drawer is 4 bricks high. Then there is a row of tiles around the top, then rotate the key to the left. The teeth on the key will push the drawer out, the drawer will not go away by itself. This photo shows how far the drawer will pop out. You can then use your fingers to pull it out the rest of the way, you can use a pin to keep the drawer from sliding out when you don’t want to. Slide the pin into a Technic brick and build it into your safe. Then add a Technic brick on top of the drawer. Make sure that the height of the pin aligns with the height of the hole in the drawer! Read more: How to add lights to the Chinese laser machine safety. Then raise the edges so that their height is exactly to the top of the drawer.If you want a coin slot, add a 1 x 4 tile to the top of the frame. Then add another row of bricks, complete the machine by placing a 16 x 16 board on top, then build some decoy keys, ha ha. The one in the middle is the one that works.Here’s the second way to build a LEGO® safe.This is a great design because it demonstrate the use of a lever. When you push the key forward into the safe, it pushes against the bottom end of a lever, which pushes the top end of the lever (and drawer) forward. We found this design on YouTube and built it following the instructions. I’ll include a video below so you can build your own! It’s a smart design. Insert the key into the slot in the bottom of the safe and the drawer will open! Here’s the tutorial we used from Let’s Do This on YouTube. Check out this channel for more LEGO® ideas!Have fun building LEGO® safes! Be sure to check out our other LEGO® building ideas! Read more: how to remove a kitchen faucet without a basin wrench | Top Q&A