Box four is live in the CrunchLabs course. It's a drawing machine, and the most involved build we'd done up to that point. Two motors, connected arms, and pivot points. That's a linkage. The trick is that one motor runs faster than the other, so the pen never repeats the same path and you get these spirograph patterns instead of a circle. Evan clocked it right away as the spirograph he used to have. The build has more small fiddly steps than the earlier boxes. I put a sticky pad on the wrong motor. Evan installed the linkage arms upside down and had to pull them off and redo it. Instructions were clear, we just weren't. Good stuff in here for teaching. Ball joints, which I connected to his shoulder and hip, and he was genuinely surprised he has them. Pivot rivets, which is a solid tongue twister. And the reason two different motor speeds make a non-repeating pattern. We'd brainstormed hacks before filming and most of them worked. Layer colors, move the paper mid-draw, swap pens, change which hole on the wheel the arm attaches to. That last one changes the pattern the most. Honest limitation. Out of the box there aren't many design options, so how long this kit stays interesting depends on whether your kid likes experimenting. This is also the first time I said out loud that a 3D printer would let you make custom linkage arms. Looking back, that's where the rest of this channel came from. After the manual's done, does your kid keep tinkering or go find the next thing?

Latest lesson: motorizing the helmet, which turned out harder than printing it. Same as the rest, we're getting organized and turning the series into a proper classroom. If you caught this one already, no worries. This is the real, unpolished version of a build. We installed the Walsh 3D Servo Pro kit, wired up a CrashWorks control board, learned heat-set inserts, twisted and soldered our own wires, and zeroed the servos. The faceplate actually moved, which was a huge win. But we also hit real problems: heat-set holes that came out too big, the mask colliding with the servo arms, and wire routing and clearance issues we still need to fix before sanding and paint. That's the honest part of building. You try it, you learn from it, you fix it, and you keep going. If you were building this, what would make you most nervous, the printing, the wiring, the motors, or the paint? Tell us.

Hey everyone, I’m Ryan, and this is my son Evan! We’re the father and son behind The Bonding Blueprint. On YouTube, we’ve been sharing what we’re working on as a family, and we’ll continue to do that. Things like LEGO builds, STEM kits, DIY projects, 3D printing, gaming, and learning new skills side by side. If you haven't seen our channel, you can find that here: www.youtube.com/@thebondingblueprint This Skool exists for a different reason. We wanted a place where families could slow down a bit, talk to each other, share what they’re building, and learn from one another. Not just watch a video and move on, but actually be part of a community. This Skool is for: - Parents who want to spend more hands-on time with their kids - Kids who enjoy building, creating, and figuring things out - Families who already love this stuff and want to go deeper - Families who don’t know how to do any of this yet, but think it looks interesting or want to try You do not need any prior experience to be here. You don’t need to be an expert. We definitely aren’t. A big part of what we try to show, both on YouTube and here in Skool, is that a lot of these topics can look complicated or intimidating at first glance. LEGO mega builds, STEM kits, 3D printing, home improvement tools, DIY projects, even gaming setups can feel like something only experts do. In reality, once you break things down into smaller steps, watch someone else work through it, or tackle it together as a family or a community, those same projects become very approachable. That has been the whole point of our content from the beginning. Showing families that you do not need prior knowledge to start, you just need curiosity, patience, and a willingness to learn together. We make mistakes. We backtrack. We figure things out as we go. And we talk honestly about what worked and what didn’t. The most important part of this Skool is participation. Posts, comments, questions, and sharing your own projects are what will make this place valuable.