Illegal techniques were crucial for LEGO Batman Forever Batmobile

The new LEGO Batman Forever Batmobile used some crucial illegal techniques, but that's not unheard of in the initial stages of development.

We're just a few weeks away from the release of 76304 Batman Forever Batmobile, and there's still time to dig deep into the development of this build, as discussed in a recent roundtable interview with designer Mark Stafford with Brick Fanatics and other LEGO fan media.

All LEGO sets have a lengthy development process to finalise the designs, but for the new Batmobile, some illegal building techniques were required to sell the concept.

"This is the very first sketch model that was made for this car," shared Mark, showcasing a sketch build for the Batmobile. "This was built by Ed Lawrence. Because it's a sketch model, there are all sorts of illegal builds in here. There's a tile pushed into a clip, which we can't put in the final set. There are all sorts of other things here that had to be improved, but it was the proof of concept."

When designers mention illegal building techniques, they are referring to ways in which a LEGO piece can be attached to another, but it causes stress to one or both pieces, which will cause damage over time and may not be sturdy enough for play or display. These have been named illegal techniques and are generally not allowed for final set designs, except in special circumstances.

Mark goes on to explain why illegal building techniques were permitted in the early stages of development for 76304 Batman Forever Batmobile, as well as what else is allowed for sketch models.

"In initial sketches, we're just trying to sell the idea that this could become a LEGO set, the way fans do on LEGO Ideas. Internally, we can do whatever. We can spray pieces, we can glue pieces, we can ask for parts to be 3D-printed, even though we know we might not be able to do that, just to sell the idea.

"Edd's sketch was given the go-ahead because he proved it's possible to make this car, and roughly to the scale we wanted to make it, then it's handed to somebody who has to go and make it into a LEGO set, trying to eliminate as many new elements needed as possible. I tried to build this one without needing a new cockpit, for example, but it just didn't look right. It needed a new one, just to have that sleek look going into the top of the car."

While illegal building techniques are generally frowned upon, they're sometimes essential to sell the concept of the model to the higher-ups at the LEGO Group and proceed further with exciting models. That's what happened with 76304 Batman Forever Batmobile, and this fact will be useful to know when looking at other new LEGO sets in the future to ponder how their sketch builds might have looked.

76304 Batman Forever Batmobile is available to pre-order now for £89.99 / $99.99 / €99.99, and the LEGO DC set will be released on August 1, 2025.

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